100 foot yacht fuel consumption

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Yachts and Fuel – How Much do they Really Consume?

Fuel is one of many annual running costs of a yacht. Not only does the yacht need fuel for cruising; the generators require it to keep the vessel running while at anchor and underway. As well as this, many of the water sports toys require it too.

Some yachts cross the Atlantic Ocean twice a year between the Mediterranean and Caribbean while others embark on world cruises. That equates to a lot of fuel.

So How Much Do They Really Consume?

According to the Yachting Pages, the longest Superyacht in the world, 180m M/Y Azzam, holds 1,000,000 litres of fuel. To put it into perspective, that is the equivalent of filling a regular hatchback car 23,800 times. Or, six Boeing 747 commercial airliners.

West Nautical’s Vessel Manager, Tony Hildrew, a former Yacht Chief Engineer said:

“Fuel is the single biggest expense when it comes to yacht operations, it is estimated that the global spend on fuel is around $150bn annually however this shouldn’t put you off, there are a number of ways to ensure your fuel consumption doesn’t get out of hand. Implementing a Ships Energy Efficiency Management Plan or SEEMP for short is a great way to keep fuel costs down without compromising on your cruising experience.”

Each yacht will consume fuel differently for a number of reasons. It could be the size and make of the engines. Or, how often the yacht is using generators. As well as the number of tenders and water sports toys on board that require fuel. For example, if the yacht is out at anchor and running on generators 90% of the time, the fuel consumption will be much higher than a yacht that is in a marina at night and connected to shore power and water.

Another factor that will affect fuel consumption is the yacht’s itinerary. This is because the sea conditions will impact how much fuel the engines consume.

How Is Consumption Measured?

You will be able to input the start and ending points of your cruise on the map. This will automatically update the distance table. The next step is to enter the speed, fuel consumption and cost of fuel per litre to determine the cost of the trip.

Here is an example: A fast 30m yacht cruising at 20 knots will consume roughly 400 – 500 litres depending on the engine type. This would equate to the total consumption of 2500 litres for a distance of 100 nautical miles.

Another example is, a 70m yacht looking to travel 100 nautical miles with the engines burning 1000 litres per hour would add up to a total consumption of 8335L for that passage. Depending on where the yacht bunkered, the estimated cost with the price per litre being on the low end at €0.90 per litre would cost a total of €7501.50. An example of a 100 nautical mile passage would take you from Saint Tropez to The North Coast of Corsica.

How Much Does It Cost?

Fuel prices fluctuate depending on which country you bunker in and some places you bunker offer tax free fuel such a Gibraltar and Montenegro. Fuel prices can vary but typically costs between €0.80 and €1.30 per litre.

Yacht charter, sales and management company West Nautical added:

“Fuel costs should be at the top of any yacht owner and captain’s minds for two reasons: to minimise costs as well as reduce the environmental impact of burning unnecessary fuel. The superyacht charter market, more than most other markets, relies on pristine waters for their guests to enjoy their holiday. If the oceans in popular charter destinations are not maintained, it will decrease the demand for yacht charter and therefore the revenue for owners.” “If you are looking for expertise in operational management and engineering in order to plan a SEEMP, West Nautical would be delighted to assist.”

About West Nautical

West Nautical sell, charter and manage superyachts from their head office in Newcastle upon Tyne. The business currently employs a team of 21 staff throughout their offices based in the UK, Russia, France and Cyprus.

  Since their inception over 25 years ago, West Nautical have become recognised as one of the most respected, trusted, knowledgeable and accountable professional services firms in yachting – largely due to their relentless determination to act in our clients’ best interests. Their approach and attitude is transparent, refreshing and focused on providing value-added services delivered simply, elegantly and affordably. 

Visit West Nautical’s website here: https://westnautical.com

For Media enquiries please contact  sarah.mackenzie@westnautical.com

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How Much Fuel Does a Yacht Use? An In-Depth Analysis

When it comes to luxury and adventure on the high seas, yachts are the epitome of both. Whether you’re a yacht owner or dreaming of chartering one for your next vacation, understanding the fuel consumption of these majestic vessels is crucial. Fuel usage not only impacts the cost of your journey but also has environmental implications. In this article, we dive into the factors affecting yacht fuel consumption and provide insights to help you estimate how much fuel a yacht uses.

Understanding Yacht Fuel Consumption

Fuel consumption in yachts is influenced by several factors, including the yacht’s size, engine type, cruising speed, and conditions at sea. Here, we break down these elements to give you a clearer picture.

Yacht Size and Engine Type

Yachts come in various sizes, from smaller 40-foot models to massive 100-foot plus luxury liners. Generally, the larger the yacht, the more fuel it consumes. Engine type also plays a significant role. Traditional diesel engines are common, but newer models may feature more efficient or hybrid engines that can impact fuel usage.

Cruising Speed

Speed is a significant factor in fuel consumption. Higher speeds increase resistance in the water, requiring more power and, consequently, more fuel. Cruising at a yacht’s optimal speed, often referred to as the “hull speed,” can help maximize fuel efficiency.

Conditions at Sea

Sea conditions can also affect fuel consumption. Smooth, calm waters allow for more efficient travel, while rough seas can increase fuel use due to the additional power needed to maintain speed and stability.

Estimating Yacht Fuel Consumption

While it’s challenging to provide a one-size-fits-all answer due to the variables involved, we can offer some general guidelines. On average, a yacht might use between 20 to 100 gallons of fuel per hour. Smaller yachts, such as those around 40 feet, tend to be on the lower end of the scale, consuming about 20 to 40 gallons per hour. Larger vessels, which are over 100 feet, can consume significantly more, sometimes exceeding 100 gallons per hour, especially at higher speeds.

Example Calculations

Let’s look at an example. For a 70-foot yacht cruising at a moderate speed of 20 knots, fuel consumption could be around 50 gallons per hour. If you’re planning a 100-mile journey, at 20 knots, it would take you approximately 5 hours. This means the total fuel consumption for the trip could be around 250 gallons.

Tips for Reducing Fuel Consumption

• Cruise at Efficient Speeds: Find and maintain your yacht’s hull speed for optimal fuel efficiency.
• Regular Maintenance: Keep the engine and hull in top condition to reduce drag and ensure the engine runs efficiently.
• Plan Your Route: Opt for the most direct route and consider current sea conditions to minimize unnecessary fuel use.
• Lighten Your Load: Only carry what you need for your journey, as extra weight can increase fuel consumption.

Understanding and managing fuel consumption is crucial for any yacht owner or enthusiast. By considering the factors outlined above and implementing fuel-saving strategies, you can enjoy the luxury of yachting more sustainably and cost-effectively. Whether planning a short excursion or a long voyage, a careful consideration of fuel use will enhance your experience on the water.

Remember, every yacht is unique, and so is its fuel consumption. For specific figures, consult your yacht’s manual or speak with a marine professional who can provide insights tailored to your vessel. Enjoy your time at sea, and sail smartly!

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Measuring your Yacht Fuel Consumption per Hour

Oct 10, 2019

less than a min

How to measure your yacht fuel consumption per hour

Yachts are quite similar to other vehicles in the sense that they work through fuel. Similarly to any other vehicle, it is important to calculate the yacht fuel consumption per hour before you plan a trip or before you purchase a vessel. Fuel consumption is also a good comparison base between boats. Whether before going on a trip, or buying a yacht, you need to have all the facts straight and know how much money you are going to invest not only at once upon purchase but also periodically.

There are different factors in the fuel consumption of a yacht. For example, if you use a generator or if you stay at anchor instead of docking, the fuel consumption will be increased . The itinerary will change fuel consumption as well. Sea is different than roads and the conditions in a sea change more dramatically than on land, which also impacts fuel consumption.

Fuel consumption for boats is measured in gallons per hour . The efficiency of boat fuel is measured in pounds of fuel that are used in an hour per horsepower. In order to be able to read the calculation right, any boat owner should know that gasoline is almost 6.1 pounds per gallon while diesel is 7.2 pounds per gallon .

Usually, if you consider that all sea conditions are pristine, the fuel consumption of a normal diesel engine is 0.4 pounds per hour for each unit of horsepower.

How to calculate yacht fuel consumption

Calculating it by hand is complicated, which is why many people choose to use online calculators . The way it works is it allows you to put down certain parameters that calculate the fuel consumption. These parameters include route , units of measurement and engine power .

Lastly , what most people are interested in is actually the cost of fuel consumption per hour. So the last parameter to include is the current price of fuel . Marine websites usually include this price up to date.

Another step that people have taken is develop a boat fuel consumption chart for their own boat and find the average in a month.

Alternatively, there is a formula that calculates the maximum fuel consumption of the engine which is:

GPH = (specific fuel consumption x HP) / The specific weight of fuel

This formula determines the fuel consumption when the engine is at full speed . If the speed is decreased then the fuel consumption is decreased as well. Basically, what you need to do is include the horsepower rate of the boat and you multiply it by the specific fuel consumption average and you divide that product by the weight of the fuel.

If you want to compare your boats GPH with other boats than you can use TheBoatDB database. If you already have a boat you can register for free and compare it with other boats within the database.

These are simple methods to calculate fuel consumption, however for a precise one you would have to know all the specifics of your boat and put the parameters through the calculator.

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Yacht fuel cost calculator - how to estimate the costs.

Yacht captains have many responsibilities when it comes to the management of their vessel. One of them is keeping track of expenses, which is why it is important to familiarize yourself with the vessel’s operational costs. Keeping a luxury superyacht afloat isn’t cheap, and many claim that the average annual cost ranks up to 10% of the vessel’s price.

From these expenses, a significant portion goes to fuel. Filling up the tank of your boat is quite pricey, which is why a growing number of boat owners want to know exactly how much they are looking to spend for their upcoming voyage. This is also important for people who want to charter a boat for their holiday.

If you’re wondering how to best estimate the costs involved, you’re in the right place. This article will help you calculate your vessel’s yacht fuel cost while giving an overview of all the criteria used as variables. To make the process even easier, we link to a yacht fuel cost calculator to help you get an indication of the expenses you’ll need to cover. Let’s delve in!

Yacht fuel cost calculator

How to estimate yacht fuel costs, how much fuel does a yacht use.

• Price of boat fuel per gallon?

Yacht fuel formula

The easiest way to calculate your fuel costs is by using a yacht fuel cost calculator. There is a great calculator available here in case you want to save time and get an approximate estimation.

As you can see, the yacht fuel cost calculator has many variables which you need to be aware of before you set out to calculate the approximate price. This is what we will be dealing with in the next few chapters.

To help you get a better understanding of the calculation process we will do things manually while giving you the exact formulas used to calculate your vessel’s fuel needs. Therefore, make sure you keep on reading.

There are several things you need to keep in mind when you first set out to estimate the total fuel cost for your next voyage. These are summarised in the following points:

• Distance of journey - The total amount of nautical miles (or km)
• Cruising speed - The (average) speed of your vessel (in knots or km/hr)
• Fuel consumption - Understanding how many gallons (or liters) of fuel are consumed per hour
• Yacht fuel price - Understanding the average market price per gallon of fuel

The first two points depend solely on your needs and personal preference, which means that they are more flexible on a subjective basis. The latter two points may require a bit of research, especially if you’re not familiar with the engine of the vessel.

In the following sections, we will delve deeper into each of the points mentioned above, and offer the required formulas to help you calculate yacht fuel cost.

Calculating distance and speed

To understand the exact distance you are looking to cover in your next voyage, you can simply use Google Maps to plan your route. The following video explains the process in detail.

As soon as your route is planned out, you can measure the distance as well, selecting the preferred method of calculation. In our case, it is best to measure in nautical miles (1nm=1,85km), as this metric is more commonly used among sea men. The yacht fuel cost calculator above has an embedded map that helps you pinpoint the journey you want to make.

Next comes the cruising speed. The number is mostly calculated in knots (nautical miles/hr). The speed with which the vessel will cruise depends on the captain onboard, but is often influenced by the owner and guests onboard. You can make a rough estimation of this number based on previous trips.

Next, we need to calculate the amount of fuel that you will likely need. To do this we need to understand the engine type, its horsepower, and several other factors.

Let’s take a marine diesel engine for example. These engines are very common on motor yachts and consume approximately 0.4 pounds of fuel per hour for each unit of horsepower. You can find fuel consumption info for your specific engine by looking it up on the web or by calling the service number.

Once you know the fuel burn rate, it’s best to add a relative error margin of 10% based on minor factors. These include weather conditions, vessel size, and drag, all of which can increase the fuel burn.

How much fuel does a yacht use per hour?

Now that you know all the variables you can go ahead and calculate the amount of fuel that your yacht will need.

• Start by calculating the fuel burn per hour based on the horsepower of the engine.
• Add a multiplier based on the cruising speed of your vessel.

A vessel with a diesel engine of 300 horsepower will most likely burn 16-17 gallons per hour, which you can then use as a guideline when calculating the travel time based on the nautical miles you are looking to cover.

Superyachts are consuming much more fuel. An average 70-meter luxury yacht will burn around 130 gallons per hour with the engines running, while the amount increases significantly when the ship is moving. On average, you are looking at ±€2000 per hour (±1000 gallons) to achieve a speed of 20 knots. Of course, the higher the cruising speed, the more fuel you will be burning per hour, which in turn makes each hour at sea more expensive.

How much does boat fuel cost per gallon?

The exact price you are looking to pay per gallon depends on the marina you find yourself in. By looking at several price points of marinas, we get the following:

• Average diesel prices range from $3.2-$3.9 per gallon
• Average petrol prices range from $7.2-$7.8 per gallon

Note that discounts usually apply whenever you choose to purchase large quantities of fuel.

Why is boat fuel so expensive?

Marine fuel pricing is heavily inflated due to low supply and high demand. In short, the limited number of fuel stations at marinas have to service all the yachts that dock, which leads to a no-choice monopoly.

That said, yacht owners are usually not that concerned about the small price spike that marinas charge as an extra. If anything, they are happy to pay due to the convenience of the service.

How much fuel does a yacht hold?

Once again, the answer to this question depends on the size of the vessel. Smaller yachts can hold around 1300 gallons of fuel, while the bigger vessels can store up to 100,000 gallons. The ship’s engineers should be able to provide this number for the vessel you command.

Now that we have a better understanding of all the variables that determine the cost of fuel, we can go ahead and take you through the calculation process step by step.

First, know the total duration of your cruise. To obtain this information, divide the number of nautical miles by the cruising speed of your vessel (knots). For example, if you want to make a journey that totals 150 nautical miles while traveling at 20 knots, the yacht fuel formula looks as follows:

Total duration = 150 nm / 20kn

Total duration = 7,5 hrs

Note that the amount of fuel consumption may end up higher than expected if:

• Sea and weather conditions are not favourable
• You plan to make short stops along the way while the engine keeps running

Next, what you want to do multiply the number of hours by the number of gallons that your engine burns on an hourly basis while moving at the speed you previously indicated. If we take, as an example, the superyacht mentioned in the previous examples, we would make the calculation as follows:

7,5 hrs x 1000 gph = 7500 gallons

Now assume that you will also make two stops along the way, an hour and a half each, in order to let the guests enjoy their time; maybe ride a jet ski.

You then multiply the added number of hours with the consumption rate of a running engine. In this case:

3 hrs x 130 gph = 390 gallons

All that is left to do now is add up the total amount of fuel needed and multiply the number with the price per gallon.

(7500+390) x $3,5 = $27615

In this example, the final cost of your will set you back a little bit more than 27 thousand dollars. Just to be safe, calculate the additional 10% (margin of error) to be prepared against unexpected mistakes. This added amount is not necessarily an ad-on when you consider chartering. Private yacht owners, however, should add the amount to their final cost.

And that's it! You should now have a better idea on the steps you need to follow to calculate the fuel costs for your yacht. While there is quite a bit of information you should keep in mind, it is best to plan out everything with detail to avoid unforeseen costs. If you enjoyed this article, check out our blog post on yacht electrical systems as well.

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Efficiently managing fuel consumption is a critical skill for boaters, not only affecting the range of your vessel, but also impacting overall expenses. But unlike cars or trucks, calculating a boat’s fuel usage is more complex due to constantly shifting sea conditions.

In this comprehensive guide, we will dive into the intricacies of estimating and computing fuel consumption for boats, empowering you to make informed choices for an optimal boating experience.

Key Points for Fuel Consumption

Determining the amount of fuel your boat consumes holds several significant advantages:

Range Projection

Understanding your boat’s fuel economy–the amount of fuel needed per mile or nautical mile–helps anticipate the safe distance you can cover with a specific fuel capacity.

Cost Analysis

Calculating fuel usage offers valuable insights into operational costs, particularly when comparing different boats or marine engines for purchase.

Comparison Tool

Many boaters rely on fuel consumption charts or use boat tests as benchmarks for comparison. This allows for smarter decision-making when selecting a new boat or engine based on efficiency.

Due to the ever-changing nature of sea conditions, boat fuel efficiency is measured in gallons per hour (GPH). The metric used is pounds of fuel consumed per horsepower generated per hour, commonly referred to as ‘brake-specific fuel consumption.’

Keep in mind that gasoline weighs approximately 6.1 pounds per gallon, while diesel comes in at around 7.2 pounds per gallon.

The relentless hum of a well-tuned four-stroke gasoline engine can consume an impressive 0.50 pounds of fuel per hour for every unit of horsepower it churns out.

And let’s not forget the tireless diesel engine, which burns through 0.4 pounds of fuel per hour for each unit of horsepower it generates.

But be warned, these numbers only scratch the surface–factors like boat drag, sea conditions, and efficiency losses can greatly affect your fuel burn.

To navigate through this maze, use this formula to estimate your boat or engine’s fuel consumption:

GPH = (specific fuel consumption x HP) / Fuel Specific Weight

Gas = 6.1 lb. per gal

Diesel = 7.2 lb. per gal

The key to unlocking maximum horsepower lies in these formulas, optimized for the engine’s peak performance at wide-open throttle. But don’t be fooled–fuel consumption actually decreases during cruising speeds.

And with advanced electronic and direct fuel injection systems, efficiency is taken to a whole new level.

Unlocking Boating Performance

The roar of the boat motor and the number of miles it can go on a single gallon of fuel are crucial elements to consider while out on the water.

These two concepts, known as ‘boat motor pitch’ and ‘miles per gallon (MPG),’ hold the key to unlocking optimal boating performance. So pay attention, because your next adventure may depend on it.

Boat Motor Pitch

The pitch of a boat motor typically refers to the pitch of the boat’s propeller. The propeller pitch is the distance that the propeller would move in one revolution if it were moving through a solid, like a screw through wood. It’s measured in inches.

A higher pitch means the propeller is designed to move the boat further with each revolution, which can be efficient for speed but may reduce the engine’s revolutions per minute (RPM).

A lower pitch propeller will move the boat less distance per revolution but can increase RPM, potentially offering better acceleration and power for carrying heavy loads.

Choosing the right propeller pitch is crucial for optimal boat performance. It needs to be matched with the boat’s size, weight, and the motor’s power to ensure the engine operates within its recommended RPM range for peak efficiency.

Miles Per Gallon 

MPG in the context of boats refers to the fuel efficiency of the boat. It indicates how many miles the boat can travel on one gallon of fuel.

Calculating MPG in boats is more complex than in cars due to variable factors like water conditions, boat weight, and hull design. A boat’s MPG can vary significantly based on these factors.

Higher MPG indicates better fuel efficiency, which is desirable for reducing fuel costs and environmental impact.

Boaters often look for ways to improve their MPG by optimizing the boat’s load, maintaining the engine, and using the boat at efficient speeds.

Assessing Fuel Usage and MPG

Begin by filling your boat’s tank to a precise level and recording the gallons added.

Then, set sail and take note of the distance traveled while considering sea conditions and cruising speed.

Upon return to the dock, refill the tank to the same level and record the additional gallons needed.

Using this information, you can determine the amount of fuel consumed during your trip and calculate your MPG using the formula: Distance Traveled / Gallons Consumed.

This equation is a valuable tool for determining the boat’s fuel efficiency and can be used to plan more efficient journeys in the future.

Many modern engines come equipped with gauges that display the total fuel consumption during a trip, as well as real-time updates on fuel efficiency to assist in saving fuel.

Maximizing Fuel Efficiency 

The rumble of a boat motor is like a heartbeat to any avid boater. But did you know that how you trim your boat and manage fuel can make or break your entire experience on the water?

These two concepts are key players in maximizing performance and efficiency, leading you to smooth sailing and unforgettable adventures.

Boat Motor Trim

The trim of a boat motor refers to the angle of the outboard motor or stern drive in relation to the transom of the boat. Adjusting the trim changes the angle at which the hull meets the water.

Proper trimming can significantly affect the boat’s performance. When a boat is trimmed correctly, it runs more efficiently, achieving optimal speed and handling. The goal is to find the trim sweet spot where the boat planes smoothly on top of the water with minimal resistance.

Trimming the motor too low (in) causes the bow of the boat to sit lower in the water, increasing drag and reducing speed and efficiency. Trimming too high (out) can cause the propeller to ventilate, leading to loss of propulsion and potential engine damage.

Fuel Economy

Fuel economy in boating refers to how efficiently a boat uses fuel, typically measured in GPH or MPG.

Optimizing the trim of the boat can lead to better fuel economy. When a boat is properly trimmed, it reduces drag and allows the boat to move through the water with less effort and power. This efficiency translates into less fuel consumption for the distance traveled.

Additionally, a well-trimmed boat can also reduce engine strain and potentially extend the life of the motor.

Balancing Trim and Fuel Economy

Achieving the best fuel economy involves finding the optimal trim setting where the boat runs most efficiently. This setting varies depending on the boat’s design, load, water conditions, and speed.

Boaters often use trim tabs or power trim (adjustable with buttons or a lever on the throttle control) to adjust the trim level while underway, constantly fine-tuning for the best performance and fuel efficiency.

It’s important to monitor the boat’s performance indicators such as speed, RPM, and fuel consumption gauge, if available, to determine the most efficient trim setting.

Final Thoughts

Fuel up for success on the open seas by mastering your boat’s fuel consumption and miles per gallon. With this crucial knowledge, boaters can navigate their vessels with confidence and make informed decisions for efficient and cost-effective travels.

Don’t sail blindly–install a fuel monitoring system to track your consumption for ongoing management and worry-free long-distance cruises.

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Fuel consumption and range values for motoryachts

With sample measurements on a grand banks 36 my trawler data source: powerboat & motoryacht magazine.

We all know, we all hear, that consumption, range, noise and engine wear are strongly related to the engine revolutions. The data below show that these relations are beyond the imagination of most of us.

All what has been done is that a boat was run with varying engine revolutions and consumption, speed and noise were recorded.

1. Speed of the vessel is the variable least depending on engine revs. When the engine revs are 1000-1 speed is 6.3 knots. When the engine is revved up to 2650-1 , the speed has increased to 15.7 knots. 2. Range, way made good per unit fuel and hourly consumption are highly dependent on the engine revs. As an example, while at 1000-1 revs the hourly fuel consumption is 7.6 liters. At 2650-1 revs this has increased to 84.9 liters. Thus, the hourly consumption has increased more than TEN fold. At the same time, range and way made good per unit fuel has decreased FIVE fold. At this example the “good” revs are 1500 – 1750 revs. Specially the green curves show the “hump” at these revs. Above these revs the range drops more significantly.

In summary, whoever runs his/her engines calmly, reduces engine wear, saves money and has the comfort of a larger range. Whoever “beats” the engines harm the environment and themselves..

The speed has been measured as average of two direction by radar.

Source:  Powerboat & Motoryacht, January 1996, page 92

How Many MPG Does a Yacht Get?

When it comes to determining the fuel efficiency of a yacht, several factors come into play, including the size and weight of the vessel, the type of motor it has, and it’s cruising speed. While smaller skiffs with lightweight bodies and lower horsepower motors can achieve higher miles per gallon (MPG) ratings due to reduced drag, average-sized yachts typically offer a fuel efficiency range of around 3-5 MPG while cruising. This translates to an approximate cruising speed of 25 miles per hour and a fuel consumption of 4 MPG. It's worth noting that these estimates can vary depending on the specific make and model of the yacht, as well as external factors such as sea conditions and the load carried on board. Ultimately, finding the right balance between speed and fuel efficiency is essential for yacht owners who want to enjoy the open waters while minimizing their environmental impact and operating costs.

How Much Fuel Does a 100 Foot Yacht Hold?

It determines how far they can travel without needing to refuel and affects the overall cost of operating the vessel. The size and type of the yacht also play a significant role in determining fuel capacity, as larger yachts tend to require more power and thus consume more fuel. Additionally, certain yachts may be equipped with additional fuel tanks or have larger tanks installed, allowing for extended cruising range.

The fuel capacity of a 100-foot yacht can vary greatly depending on it’s design and purpose.

Fuel tanks are usually located below deck or in specific compartments designed to safely store fuel. These tanks are built to meet strict safety standards and are often made from durable materials such as aluminum or fiberglass.

Most yachts use diesel fuel, as it’s more efficient and safer for marine applications compared to gasoline. Diesel fuel also provides greater range and fuel economy, which is crucial for long-distance cruising. However, some smaller recreational yachts may still use gasoline as their fuel source.

Factors That Affect the Fuel Efficiency of a Yacht: This Topic Could Explore How Various Factors, Such as Hull Design, Engine Type, Weight Distribution, and Cruising Speed, Can Impact the Fuel Efficiency of a Yacht.

When it comes to the fuel efficiency of a yacht, there are several factors that can play a role. These include the design of the boat’s hull, the type of engine it has, how weight is distributed throughout the vessel, and the speed at which it cruises. Each of these factors can influence the amount of fuel a yacht consumes, and understanding their impact can help yacht owners optimize their vessel’s fuel efficiency.

The fuel consumption of a super yacht is a significant consideration for those who enjoy the luxury and adventure of sailing the open seas. With engines running, an average 70-meter luxury yacht will consume approximately 130 gallons of fuel per hour. However, this figure escalates considerably when the yacht is in motion. To achieve a speed of 20 knots, you can expect to burn around 1000 gallons of fuel per hour, amounting to an approximate cost of €2000.

How Much Fuel Does a Super Yacht Consume?

The fuel consumption of a super yacht is a topic of significant interest and discussion among yacht enthusiasts and experts. It’s important to note that the exact fuel consumption can vary depending on various factors, including the size and design of the yacht, the speed at which it’s operated, the weather conditions, and the weight carried on board.

On average, a 70-meter luxury yacht will consume around 130 gallons per hour with the engines running. However, it’s crucial to recognize that this figure can increase significantly when the yacht is in motion. When aiming to achieve a speed of 20 knots, the fuel consumption can rise to approximately ±€2000 per hour, which is roughly equivalent to 1000 gallons of fuel.

Some yachts utilize diesel engines, which can be more economical compared to other engine options. However, larger yachts with higher speeds may require more powerful engines that consume more fuel. Therefore, it’s important for yacht owners and operators to consider the trade-off between power, speed, and fuel consumption when selecting the right vessel for their needs.

In addition to the propulsion engines, a super yacht may also have auxiliary engines that power various systems onboard, such as air conditioning, lighting, cooking, and entertainment. These auxiliary systems contribute to the overall fuel consumption of the yacht. Therefore, it’s essential to manage and optimize energy usage to minimize fuel consumption and reduce environmental impact.

Efforts are underway in the yachting industry to develop more fuel-efficient vessels and explore alternative energy sources such as hybrid propulsion systems and renewable energy technologies. These advancements aim to reduce the environmental impact of super yachts and promote sustainability within the industry.

By monitoring and managing fuel consumption, yacht owners can make informed decisions to optimize efficiency and minimize costs. Whether by implementing energy-saving technologies or adopting fuel-efficient practices, every effort contributes to a more sustainable and cost-effective yachting experience.

Factors That Affect Fuel Consumption on a Super Yacht (e.g., Size, Design, Weather Conditions)

There are several factors that can affect fuel consumption on a super yacht. One of the main factors is the size of the yacht itself. Larger yachts tend to require more fuel to power their engines and propulsion systems.

Another important factor is the design of the yacht. Yachts that are designed to be more aerodynamic and efficient in the water tend to use less fuel compared to yachts with less efficient designs.

Weather conditions also play a role in fuel consumption. Rough seas and strong winds can create more resistance, causing the yacht’s engines to work harder and consume more fuel.

Other factors that can affect fuel consumption include the weight of the yacht, the efficiency of the engines and propulsion systems, and the speed at which the yacht is traveling. By considering these factors, yacht owners and operators can optimize fuel consumption and minimize their environmental impact.

Source: Yacht Fuel Cost Calculator – How to Estimate the Costs

Now that we’ve established that it costs $6,600 to fill up a 60-foot yacht with a fuel capacity of 1,200 gallons, let’s explore some other factors that contribute to the overall cost of maintaining and operating such a vessel.

How Much Does It Cost to Fill Up a 60 Foot Yacht?

The cost of filling up a 60-foot yacht can vary depending on the fuel capacity and the average fuel price. Assuming the yacht has a fuel capacity of 1,200 gallons and an average fuel price of $5.50 per gallon, it will cost approximately $6,600 to completely fill up the tank.

It’s important to note that these estimates may fluctuate as fuel prices can change over time. Moreover, factors such as the efficiency of the yachts engines, speed, and weather conditions can also affect fuel consumption.

In addition to the cost of filling up the tank, yacht owners should also consider other expenses associated with operating a yacht. Maintenance, insurance, docking fees, and crew salaries are just a few examples of the ongoing costs that can be associated with yacht ownership.

To ensure accurate estimates, it’s advisable for yacht owners to keep track of their vessels specific fuel consumption rates and the current fuel prices in their area. This will enable them to make more precise calculations and budget accordingly.

Financial planning and budgeting are crucial to ensure that all costs are accounted for and to enjoy a stress-free yachting experience.

In addition to full displacement trawlers, there are other types of yachts that offer impressive fuel efficiency. Some manufacturers have started incorporating hybrid propulsion systems and energy-efficient design features into their yachts, allowing for reduced fuel consumption and emissions. These advances in technology are revolutionizing the yachting industry, offering environmentally-conscious options for yacht owners without compromising on luxury or performance.

What Are the Most Fuel Efficient Yachts?

Full displacement trawlers are renowned for their exceptional fuel efficiency, making them the top choice for those seeking a yacht with optimum economy. Consider yachts like Northern Marine, which feature single engines capable of delivering a smooth and consistent cruising speed. With an impressive range of 1.5 to 2.5 nautical miles per gallon, these yachts enable long-distance voyages without compromising on comfort.

What sets these yachts apart is their ability to traverse the globe effortlessly, thanks to their efficient fuel consumption. Being able to go anywhere in the world while achieving commendable fuel economy is a major advantage for adventurous yacht enthusiasts. This capability ensures that owners can embark on extended journeys without worrying about excessive fuel expenses holding them back.

Moreover, the comfort factor of full displacement trawlers isn’t compromised in the pursuit of fuel efficiency. These yachts offer spacious and luxurious interiors, designed to provide a home-like experience on the water. Whether it’s a well-appointed stateroom, a gourmet galley, or a cozy salon, these yachts provide a high level of comfort that enhances the overall cruising experience.

The reduced fuel consumption of these yachts helps to minimize their environmental impact, aligning with the growing focus on sustainability within the yachting industry.

Design and Engineering Innovations: Highlighting the Latest Advancements in Yacht Design and Engineering That Contribute to Improved Fuel Efficiency, Such as Hull Shape Optimization, Lightweight Materials, and Advanced Propulsion Systems.

• Application of hull shape optimization techniques
• Utilization of lightweight materials for construction
• Adoption of advanced propulsion systems

MJM Yachts has taken the lead in fuel efficiency and powerboat cruising performance with their exceptional nautical miles per gallon (NMPG) and speed per horsepower. Their commitment to sustainable boating is evident in their innovative design and engineering, making them the top choice for those seeking a fuel-efficient yacht.

What Is the Most Fuel Efficient Yacht?

MJM Yachts has carved a niche for itself in the competitive world of powerboats by being recognized as the most fuel efficient yacht manufacturer. Their commitment to maximizing fuel efficiency has earned them a reputation that no other brand can rival.

Their models incorporate slender hull forms and advanced hydrodynamics, which minimize drag and resistance. By reducing the power needed to propel the yacht through the water, fuel consumption is significantly reduced.

In addition to their cutting-edge hull designs, MJM Yachts also utilizes lightweight construction materials that further enhance their fuel efficiency. By using advanced composite materials, such as Kevlar and carbon fiber, the weight of the yacht is dramatically reduced. This reduction in weight translates into increased fuel efficiency, as less power is required to propel the lighter vessel.

Their commitment to maximizing fuel efficiency through innovative design, lightweight materials, and advanced propulsion systems sets them apart from the competition.

Comparison of Fuel Efficiency Between MJM Yachts and Other Yacht Manufacturers.

When comparing the fuel efficiency of MJM Yachts with other yacht manufacturers, one can evaluate the performance in terms of fuel consumption. By analyzing the specific factors that contribute to fuel efficiency, such as engine technology, hull design, and weight, it’s possible to determine which yachts offer better fuel economy. It’s important to consider these variables and conduct an unbiased assessment to make accurate comparisons.

However, on average, most yachts will achieve a fuel consumption rate of around 3-5 miles per gallon while cruising.

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How Much Fuel Does a Boat Use Per Hour? A Comprehensive Guide

Boating enthusiasts and boat owners alike often wonder how much fuel their boat uses per hour.

The answer to the question of how much fuel does a boat use is not straightforward, as fuel consumption can vary depending on several factors. Boat size, weight, engine type, and speed are just a few examples of the variables that can affect fuel usage.

Understanding how much fuel a boat uses per hour is crucial for boaters who want to plan their trips and budget accordingly. Furthermore, knowing how to calculate fuel consumption can help boaters make informed decisions when shopping for a new boat or engine.

In this article, we will explore the factors that influence fuel consumption in boats and provide tips on how to estimate fuel usage. By the end of this article, readers will have a better understanding of how much fuel their boat uses per hour and how to optimize their fuel consumption.

Understanding Fuel Consumption in Boats

Boat fuel consumption can vary significantly depending on various factors. Understanding these factors is crucial to estimate how much fuel a boat will consume in a given period. This section will discuss some of the critical factors that affect fuel consumption and how to calculate it.

Factors Affecting Fuel Consumption

• Boat Type and Size: The type and size of the boat have a significant impact on fuel consumption. Smaller boats tend to consume less fuel than larger boats. For example, a 20-foot boat will consume less fuel than a 40-foot boat with the same engine.
• Engine Type and Size: The type and size of the engine also play a crucial role in fuel consumption. A larger engine will consume more fuel than a smaller engine, even if both are of the same type. Gasoline engines tend to consume more fuel than diesel engines.
• Weight: The weight of the boat and its load can affect fuel consumption. A heavier boat will require more fuel to move than a lighter boat.
• Speed: The speed at which the boat is traveling can significantly impact fuel consumption. Boats that travel at higher speeds tend to consume more fuel than boats that travel at lower speeds.
• Weather and Water Conditions: Weather and water conditions can affect fuel consumption. Boats traveling against the tide or in rough water will consume more fuel than boats traveling with the tide or in calm water.

Calculating How Much Fuel Does a Boat Use Per Hour

To calculate fuel consumption, you need to know the fuel burn rate of the engine. The fuel burn rate is the amount of fuel the engine consumes per hour. You can calculate the fuel burn rate by dividing the engine’s horsepower by the fuel consumption rate.

For example, if an engine has a horsepower of 100 and consumes 10 gallons of fuel per hour, the fuel burn rate would be 10/100, which is 0.1 gallons per horsepower per hour.

Once you know the fuel burn rate, you can estimate how much fuel the boat will consume in a given period. For example, if the boat travels at a speed of 20 knots and has a fuel burn rate of 0.1 gallons per horsepower per hour, and the engine has 200 horsepower, the boat will consume 20 gallons of fuel per hour.

In conclusion, understanding fuel consumption in boats requires knowledge of several critical factors, including boat type and size, engine type and size, weight, speed, and weather and water conditions. Calculating fuel consumption involves determining the fuel burn rate of the engine and estimating how much fuel the boat will consume in a given period.

Types of Boats and Their Fuel Consumption

When it comes to fuel consumption, different types of boats have different requirements. Factors such as the boat’s size, weight, and speed all play a role in determining how much fuel it will consume per hour. Here are some common types of boats and their typical fuel consumption rates.

Fishing Boats

Fishing boats are typically smaller and slower than other types of boats, which means they use less fuel. On average, a fishing boat will use between 3 and 8 gallons of fuel per hour at cruising speed.

Pontoon Boats

Pontoon boats are popular for leisurely cruising and entertaining. They are larger than fishing boats and have a flat bottom, which makes them more stable. However, this also means they use more fuel. A pontoon boat will typically use between 5 and 15 gallons of fuel per hour at cruising speed.

Bass boats are designed for fishing and are typically smaller and faster than other types of boats. They are also more fuel-efficient, using between 3 and 6 gallons of fuel per hour at cruising speed.

Center Console Boats

Center console boats are versatile and can be used for fishing, cruising, and water sports. They are larger than bass boats and typically use between 10 and 20 gallons of fuel per hour at cruising speed.

Cabin Cruiser Boats

Cabin cruiser boats are designed for overnight trips and have a cabin with sleeping quarters and a bathroom. They are larger and heavier than other types of boats, which means they use more fuel. A cabin cruiser boat will typically use between 20 and 30 gallons of fuel per hour at cruising speed.

Bowrider Boats

Bowrider boats are popular for water sports and leisurely cruising. They are typically smaller than cabin cruiser boats but larger than fishing boats. A bowrider boat will typically use between 5 and 15 gallons of fuel per hour at cruising speed.

Overall, the fuel consumption of a boat depends on various factors such as boat size, weight, and speed. Understanding the fuel consumption of different types of boats can help you make an informed decision when choosing a boat that meets your needs while minimizing your fuel costs.

Engine Size and Power

Understanding horsepower.

When it comes to boat engines, horsepower is a crucial factor in determining how much fuel a boat will consume per hour. Horsepower is a measure of the engine’s power output, and it directly affects the speed and performance of the boat. The more horsepower an engine has, the faster the boat will go, but it will also consume more fuel.

How Engine Size Affects Fuel Consumption

Another important factor that affects fuel consumption is the engine size. The size of the engine is measured in horsepower, and it can range from small outboard motors with 9.9 hp to large inboard engines with over 300 hp. In general, larger engines consume more fuel than smaller engines, but they also provide more power and speed.

The type of engine is also important when it comes to fuel consumption. Two-stroke engines are known to be less fuel efficient than four-stroke engines, but they are also lighter and provide more power. Four-stroke engines, on the other hand, are more fuel efficient and produce less emissions , but they are heavier and provide less power.

The weight of the boat and the drag created by the hull also play a role in fuel consumption. Heavier boats require more power to move through the water, which means they will consume more fuel. Boats with a sleek, streamlined hull design will create less drag and require less power to move through the water, resulting in lower fuel consumption.

Here is a table that shows the average fuel consumption for different engine sizes:

It’s important to note that these numbers are just averages, and actual fuel consumption will depend on a variety of factors, including boat weight , hull design, and weather conditions.

Cruising Speed and Fuel Efficiency

Understanding cruising speed.

Cruising speed is the speed at which a boat travels comfortably and efficiently. It is important to understand that cruising speeds vary depending on the type of boat, weather conditions, water conditions, and the number of passengers on board. In general, most boats have a cruising speed of around 20-30 knots.

When a boat is traveling at its cruising speed, it is operating at its most efficient fuel consumption rate. Going faster than the cruising speed can result in a significant increase in fuel consumption. On the other hand, going slower than the cruising speed can also result in increased fuel consumption as the boat struggles to maintain speed.

How to Optimize Fuel Efficiency

To optimize fuel efficiency, it is important to find the ideal cruising speed for your boat. This can be done by conducting a fuel consumption test. Take a piece of paper and make a table, or use a spreadsheet, listing out the rpm, speed in mph, and amount of fuel burned per hour, or gph. Divide the speed by the gph, and you’ll get mpg.

To further optimize fuel efficiency, consider the following tips:

• Reduce weight on board: The more weight on board, the more fuel the boat will consume. Remove any unnecessary items to reduce weight.
• Maintain the boat: A well-maintained boat will operate more efficiently and consume less fuel.
• Adjust trim: Adjusting the trim of the boat can help reduce drag and increase fuel efficiency.
• Monitor weather and water conditions: Rough weather and choppy waters can cause the boat to consume more fuel. Avoid these conditions when possible.

In conclusion, understanding cruising speed and optimizing fuel efficiency can help reduce fuel consumption and save money. Conducting a fuel consumption test and following these tips can help you find the ideal cruising speed for your boat and reduce fuel consumption.

Fuel Costs and Maintenance

Boat ownership comes with a set of responsibilities that extend beyond simply enjoying the water. One of the most significant factors to consider is the cost of fuel and maintenance.

Calculating Fuel Costs

Fuel costs are a significant expense for boat owners, and calculating them can be challenging. The amount of fuel a boat uses per hour depends on several factors, including the size and weight of the vessel, the type of engine, and the speed at which it is traveling.

Boat owners can use a fuel consumption calculator to estimate how much fuel their vessel will consume based on these factors. It is important to remember that fuel prices can vary depending on the marina and the type of fuel used.

Fuel-Efficient Boats

Fuel-efficient boats are becoming increasingly popular among boat owners due to the cost savings they offer. These boats are designed with fuel efficiency in mind and typically have smaller engines that consume less fuel.

Boat owners can also take steps to make their vessels more fuel-efficient, such as reducing their speed, maintaining their engines, and properly inflating their tires.

Maintenance Tips

Proper maintenance is crucial for keeping a boat in good working condition and minimizing fuel costs. Boat owners should regularly inspect their vessels for any signs of wear and tear and address any issues promptly.

Regular engine maintenance, such as oil changes and filter replacements, can also help improve fuel efficiency and reduce the risk of breakdowns. Boat owners should also ensure that their boats are properly cleaned and stored to prevent damage from the elements.

In conclusion, fuel costs and maintenance are significant expenses for boat owners to consider. By calculating fuel costs, investing in fuel-efficient boats, and practicing proper maintenance, boat owners can minimize their expenses and enjoy their vessels for years to come.

Frequently Asked Questions

What is the average fuel consumption for a boat per hour.

The average fuel consumption for a boat per hour varies depending on several factors such as the size and type of the boat, the engine’s horsepower, and the speed at which the boat is traveling. As a general rule of thumb, a small boat with a 25-horsepower engine can consume around 2-3 gallons of fuel per hour, while a larger boat with a 200-horsepower engine can consume around 20-30 gallons of fuel per hour.

How do I calculate fuel usage for a boat trip?

To calculate fuel usage for a boat trip, you need to know the boat’s fuel consumption rate, the distance to be covered, and the speed at which you will be traveling. You can use an online fuel consumption calculator or a fuel flow meter to determine the boat’s fuel consumption rate. Once you have this information, you can estimate how much fuel you will need for your trip.

What is the fuel efficiency of a 26-foot boat?

The fuel efficiency of a 26-foot boat depends on several factors such as the boat’s weight, the engine’s horsepower, and the speed at which the boat is traveling. On average, a 26-foot boat with a 250-horsepower engine can consume around 20-25 gallons of fuel per hour at cruising speed.

How much fuel does a 50-foot boat use per hour?

The amount of fuel a 50-foot boat uses per hour depends on several factors such as the boat’s weight, the engine’s horsepower, and the speed at which the boat is traveling. On average, a 50-foot boat with a 500-horsepower engine can consume around 50-60 gallons of fuel per hour at cruising speed.

How much diesel fuel is consumed per horsepower?

On average, a diesel engine consumes around 0.4 pounds of fuel per hour for each unit of horsepower it produces. For example, a 200-horsepower diesel engine would consume around 80 pounds of fuel per hour.

How far can a boat travel on a full tank of gas?

The distance a boat can travel on a full tank of gas depends on several factors such as the boat’s fuel consumption rate, the size of the fuel tank, and the speed at which the boat is traveling. On average, a boat can travel around 100-200 miles on a full tank of gas. However, this can vary significantly depending on the boat’s size, weight, and engine horsepower.

About the author

I worked as an officer in the deck department on various types of vessels, including oil and chemical tankers, LPG carriers, and even reefer and TSHD in the early years. Currently employed as Marine Surveyor carrying cargo, draft, bunker, and warranty survey.

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The Ultimate Guide to Yacht Fuel Efficiency Tips

• by yachtman
• September 13, 2023 August 26, 2023

Yacht fuel efficiency is important. It not only reduces costs but also helps the environment. Smart practices can give longer cruising and lessen carbon footprints.

Optimizing weight distribution is one way to boost efficiency. This prevents drag and improves fuel economy. Regular hull cleaning and maintenance are also key.

Advanced propulsion systems can improve efficiency, too. These eco-friendly alternatives reduce reliance on fossil fuels and provide smooth and quiet cruising. Utilizing tech like gyro stabilizers can increase stability and reduce engine power.

These tips can lessen your yacht’s environmental impact . Even small changes can reduce fuel consumption and help preserve our oceans. Implement these strategies and navigate in style and sustainability.

Pro Tip : Plan your route considering wind conditions. This optimizes sail usage and decreases engine power.

Understanding yacht fuel consumption

Let’s delve deep into a table that shows the impact of key factors on yacht fuel consumption. This will provide clear data, so we don’t feel overwhelmed.

Key Factors Impacting Yacht Fuel Consumption:

Now, let’s explore more about yacht fuel consumption. Regular check-ups help identify issues affecting fuel efficiency.

Energy-saving practices such as LED lighting, natural light, and air conditioning can reduce overall energy demands. Utilizing sails and wind power during optimal conditions reduces reliance on engines and conserves fuel.

Advanced tech like auto trim controls or navigation aids optimize performance and minimize power wastage.

By following these suggestions, yacht owners and captains can save costs and resources while reducing their carbon footprint. Understanding yacht fuel consumption is vital for smart decisions and optimizing any yacht journey.

Tips for optimizing yacht fuel efficiency

Want to save money and reduce your yacht’s environmental impact? Follow these key tips to make sure your fuel consumption is optimized!

• Regular maintenance of engines and systems; clean, inspect, service.
• Balance the load to reduce drag.
• Steady cruising speed for best fuel efficiency.
• Invest in a well-designed yacht with streamlined features.

It doesn’t stop there! Consider automatic trimming systems, advanced navigation, and even hybrid propulsion systems. According to ICCT, these can reduce fuel consumption by up to 30%! Keep up with industry trends to get the most out of your yacht. Enjoy sailing responsibly!

Best practices for fueling and refueling

Fuel efficiency is key for yachts. To ensure a smooth sailing experience and cost-effectiveness, follow best practices for fueling and refueling. Here are some tips to help you maximize fuel efficiency:

• Regular Maintenance: Check and service the engine, filters, and fuel lines regularly. This will keep your yacht working well and reduce fuel use.
• Fuel Quality: Use high-quality fuel from good sources. This will stop contaminants that can damage the engine or lower efficiency.
• Optimal Speed: Keep your yacht’s speed steady. This is best for its hull shape, weight, and engine specs. Excessive speed or changing the throttle often consumes more fuel.
• Trim Optimization: Adjust the trim of your yacht to find the sweet spot. This will reduce drag and increase fuel efficiency.

These practices not only give better fuel efficiency but also help with the engine’s life. By maintaining your yacht, using good fuel, finding the right speed, and optimizing trim, you can enjoy your sailing trip and save on fuel costs.

Furthermore, good planning for refueling can also make a difference in efficiency. Ideas include:

• Refuel at Optimal Times: Refuel during calm weather. This stops strong currents or winds that can make the process harder and affect accuracy.
• Choose Efficient Fueling Stations: Research and pick marinas with good reputations. They should provide clean fuel without impurities or adulteration.
• Monitor Fuel Levels: Track your yacht’s fuel consumption. This prevents running out of fuel and ensures timely replenishment.

By following these ideas, you not only speed up refueling but also maintain optimal performance throughout your yachting journey. After all, efficient refueling goes with fuel conservation and a better yacht experience.

Eco-friendly practices for yacht owners

Yacht owners can be eco-friendly! Strategies to minimize their impact on the environment include:

• Using biodiesel or hybrid engines to reduce carbon emissions.
• Installing solar panels for onboard systems.
• Opting for bio-based products, avoiding harsh chemicals and recycling waste.
• Selecting eco-friendly anchors and practicing responsible anchoring.
• Supporting local businesses that source supplies sustainably.

Plus, yacht owners should preserve natural habitats by avoiding sensitive areas and respecting marine wildlife. With these eco-friendly practices, they can contribute to the conservation of our oceans. Fun fact: a single superyacht can produce as much pollution as 50 cars! Source: The Guardian.

Conclusion: Benefits of implementing fuel efficiency tips for yacht owners.

Fuel efficiency tips for yacht owners bring lots of advantages. Through these tips, yacht owners can save money on fuel and also decrease their carbon footprint – helping to make the boating industry greener.

• Cut fuel costs: By using fuel efficiency tips, yacht owners can cut the amount of fuel they use, leading to great savings.
• Environmental friendliness: Fuel efficiency techniques can help reduce the environmental impact of boating, reducing air and water pollution.
• Longer trips: Fuel-efficient yachts can go further with the same amount of fuel, letting owners explore new places without worrying about refueling.
• Better reputation: Yacht owners who focus on fuel efficiency show their commitment to sustainability, gaining a good reputation with eco-friendly customers.

Not only do these tips have financial and environmental benefits, but they also give yacht owners the chance to help create a more sustainable future for boating.

In recent years, more attention has been given to fuel efficiency due to growing environmental concerns. The yachting industry is becoming more eco-friendly, with manufacturers investing in research and development to make fuel-efficient boats suitable for eco-friendly customers. As awareness increases, implementing fuel efficiency is now an important part of responsible yacht ownership.

Frequently Asked Questions

FAQ: What are some fuel efficiency tips for yachts?

Answer: Some fuel efficiency tips for yachts include maintaining a clean hull, reducing weight on board, optimizing cruising speed, regular engine maintenance, using wind power when possible, and monitoring RPM usage.

FAQ: How does a clean hull affect fuel efficiency?

Answer: A clean hull reduces drag and allows the yacht to glide smoothly through the water, reducing fuel consumption. Regular hull cleaning and anti-fouling treatments are essential for maintaining fuel efficiency.

FAQ: How can weight reduction help improve fuel efficiency?

Answer: Carrying excessive weight on a yacht increases fuel consumption. By removing unnecessary items, limiting the water and fuel load, and using lightweight materials, you can improve fuel efficiency and reduce costs.

FAQ: Why is optimizing cruising speed important for fuel efficiency?

Answer: Yachts have an optimal speed range where fuel consumption is minimized. By finding and maintaining this sweet spot, yacht owners can significantly improve fuel efficiency and reduce fuel expenses.

FAQ: What engine maintenance should be performed for fuel efficiency?

Answer: Regular engine maintenance, including oil changes, filter replacements, and tuning, ensures that the engine operates efficiently. Clean fuel injectors, propellers, and cooling systems also contribute to better fuel efficiency.

FAQ: How can wind power be used to improve yacht fuel efficiency?

Answer: Sailing with the wind whenever possible or using sails to assist the engine reduces fuel consumption. Setting sails in favorable wind conditions allows yachts to harness wind power and save fuel.

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Boat Fuel Consumption List

The fuel consumption of any yacht, can vary widely based on several factors including the yacht's size, engine type, cruising speed, and conditions under which it is operated.

The figures above are average calculated.

Boat Fuel Cost Calculator

Data Policies

Social media, yachts zenith nautic s.l.

VAT Number: B56880875

Welcome to the West Nautical Fuel Calculator

HOW TO USE:

To plot points on the map, click with your mouse - this will automatically update the distance table. Then enter the speed, fuel consumption, and fuel cost to determine the total cost of the trip.

Example 1: A fast 30m yacht cruising at 20 knots ( Lady Amanda ) will consume roughly 400-500 l/hour (more depending on engine type).

Exampe 2: A typical displacement yacht may cruise at 12 knots and consume 300 l/hour

Example 3: Some yachts can cruise at 10 knots ( Firefly ) and consume 100 l/hour

Example 4: A sailing catamaran can cruise at 8 knots and consume around 35 l/hour

Fuel prices can fluctuate, but typically fuel is between €0.8-1.2 per litre.

Get in touch with one of our client managers for a more accurate fuel distance calculation.

• 0 Fuel Consumed (L)
• 0 Total Cost

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Calculating Boat Fuel Consumption

• By Brett Becker
• Updated: September 30, 2019

Calculating a boats fuel consumption proves important to boaters for number of reasons. With knowledge of a boat’s fuel economy-how much fuel the boat burns per mile or nautical mile of travel-boaters can estimate the range they can safely expect to run.

Some boaters go as far as to develop a boat fuel consumption chart for their boat. You can use any Boating boat test as a model for this. Of course, you can also install a fuel consumption monitor if your boat’s engine does not provide a fuel consumption readout.

Additionally, knowing your boat’s fuel consumption provides a good idea of how much it will cost you to operate the boat. When shopping for a new boat or marine engine, fuel consumption provides a major basis of comparison.

Estimating Your Boat’s Fuel Burn

It’s a different story with a boat. Since sea conditions vary more widely than road conditions, the time it takes to cover a distance varies more, so fuel consumption is measured in gallons per hour. Also, while many engines have fuel flow readouts , the ability to estimate fuel burn while shopping for a boat or engine is important. You measure fuel efficiency in pounds of fuel used per horsepower developed per hour. The pros call it “brake-specific fuel consumption.” This makes it important to know that gasoline weighs about 6.1 pounds per gallon and diesel fuel 7.2 pounds per gallon.

On average, an in-tune four-stroke gasoline engine will burn about 0.50 pounds of fuel per hour for each unit of horsepower. Likewise, a well-maintained diesel engine burns about 0.4 pounds of fuel per hour for each unit of horsepower it produces. These figures don’t take drag of the boat, sea conditions, or efficiency losses through transmissions and bearings into account. But they provide an excellent relative difference between engines when shopping.

Confused yet? Look at the mathematical examples below, and a boat’s fuel economy should become clear.

Boat Fuel Consumption Formulas and Calculator

Below is the Formula to Estimate Maximum Engine Fuel Consumption.

GPH = (specific fuel consumption x HP)/Fuel Specific Weight

Constants | Gas | Diesel SFC: .50 lb. per HP | .40 lb. per HP FSW: 6.1 lb. per gal. | 7.2 lb per gal.

300-hp Diesel Engine Example GPH = (0.4 x 300)/ 7.2 = 120/7.2 = 16.6 GPH

300-hp Gasoline Engine Example GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH

Keep in mind that these formulas apply when the engine is making peak horsepower, which usually is near wide-open throttle. Fuel consumption will be decreased at cruising speeds. Also remember that engines with electronically-managed fuel injection and direct injection will yield higher fuel efficiency .

To apply these formulas to your boat, just plug in its horsepower rating and multiply it by the specific fuel consumption average, then divide the product by the fuel specific weight.

Another way is to take the total engine horsepower and divide it by 10 for gas engines or .06 for diesel engines. As you can see, this formula is simpler to calculate and easier to remember. You don’t even need a pencil and paper. It’s just not as accurate as the formulas above. The result represents the approximate gallons per hour the engine will burn at wide-open throttle. For example, a 150-horse engine will use about 15 gallons per hour. Though these figures represent averages and can vary from 10 to 20 percent, they’ll put you in the ballpark so you can plan a long-distance cruise without fear of running out of gas . You can also keep track of your boat’s fuel consumption by installing a fuel monitor.

• More: Engines , fuel consumption , How-To

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Our Guide to Yacht Fuel Capacity and Consumption

by Marine Diesel Specialists | Jul 25, 2023 | Blog , MAN Engines , Yacht Engines , Yacht Upkeep | 0 comments

Fuel consumption for yachts can vary based on factors such as the yacht’s size, weight, design, engine type, cruising speed, and the duration of the journey. Smaller pleasure yachts generally tend to be more fuel-efficient than larger luxury yachts, which may consume more fuel at cruising speed. Efficient navigation planning and optimizing cruising speed can play a crucial role in managing fuel consumption effectively. Regular maintenance and adherence to best practices can also contribute to improved fuel efficiency, ensuring that yacht owners can enjoy their voyages with minimized environmental impact and reduced operational costs. If you wish to understand more about yacht fuel capacity and use, then this article from Marine Diesel Specialists , experts in all things professional marine services , is a great place to start your journey toward understanding.

How Much Fuel Does a Yacht Hold?

Fueling a yacht is a critical aspect of ensuring smooth sailing and an enjoyable journey. The amount of fuel a typical yacht can hold in its tank varies greatly depending on the vessel’s size and purpose. Generally, yachts are designed with fuel tank capacities tailored to their intended use, whether it be coastal cruising or transoceanic voyages.

For smaller pleasure yachts, you can expect to find fuel tank capacities ranging from 200 to 1,000 gallons. These yachts are typically designed for shorter trips, day cruising, or weekend getaways, and their fuel capacities reflect those requirements. On the other hand, larger and more luxurious yachts, like superyachts and mega yachts, boast significantly larger fuel tank capacities. Average yacht fuel capacity can vary anywhere from 10,000 to 50,000 gallons of fuel, allowing them to undertake extended journeys across vast distances with ease. It’s essential for yacht owners and operators to understand their yacht’s fuel tank size and plan their trips accordingly to ensure they have enough fuel to reach their destinations safely.

Remember, knowledge about fuel for yachts and yacht fuel tank sizes is vital to maximizing your sailing experience and minimizing the risk of running out of fuel during your adventures on the open waters. For more in-depth information on this topic, we recommend checking out reputable websites of yacht manufacturers that provide comprehensive data on yacht specifications and fuel capacities. There are many factors that can make the capacity of any specific yacht’s fuel canister better or worse for the owner; one such factor is the amount of resources that are used over the course of a trip out on the water.

How Much Fuel Does a Yacht Use?

Average yacht fuel consumption can vary significantly depending on several factors, including the yacht’s size, weight, and duration of your journey out on the water. It’s crucial to consider the yacht fuel capacity of the vessel and its efficiency to better understand its consumption patterns. Fuel capacity is the total amount of fuel a yacht can hold in its tanks, as we mentioned in our previous discussion on yacht fuel tank sizes. Fuel-efficient yachts are designed to minimize fuel consumption while maximizing performance, providing a more eco-friendly and cost-effective sailing experience.

On average, smaller pleasure yachts with fuel capacities ranging from 200 to 1,000 gallons tend to be more fuel-efficient. They often feature modern technologies and hull designs optimized for reduced resistance and better fuel economy. As a rough estimate, these yachts can consume around 20 to 50 gallons of fuel per hour at cruising speed. Larger luxury yachts, such as superyachts and mega yachts with fuel capacities of 10,000 to 50,000 gallons, may have higher fuel consumption rates, averaging around 100 to 500 gallons per hour at cruising speed.

If you are looking to get the most out of your yacht, then you cannot go wrong with marine diesel services and products for marine vessels that are designed to make every trip out on the water smoother and better than the one before. Luckily our expert marine rebuild specialists are able to provide all of the assistance you could ever need.

The Marine Diesel Experts in Fort Lauderdale Are Here to Help

Welcome to Marine Diesel Specialists, your ultimate destination for comprehensive boat engine care and top-quality products. As an authorized distributor, we take immense pride in offering exceptional MAN diesel marine engines renowned for their unrivaled reliability and outstanding performance. Our esteemed Gulf Coast Diesel Service branch operates with marine rebuild specialists in Fort Lauderdale and Punta Gorda, all dedicated to delivering unparalleled customer satisfaction.

Whether you seek expert guidance on engine selection, reliable repairs, or meticulous maintenance, our seasoned professionals are eager to provide you with comprehensive insights and personalized assistance. We’re committed to ensuring your boating experience is smooth and worry-free. To deepen your knowledge of marine engines, we encourage you to explore our vast collection of informative articles on our marine engine care blog which covers topics ranging from yacht fuel capacity and much more.  Feel free to contact our marine industry professionals today to discover the full spectrum of our offerings and experience our unwavering commitment to excellence.

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Our Marine Diesel Specialists offer a variety of products and services to provide marine diesel solutions in Fort Lauderdale and Punta Gorda. Our authorized MAN Engine dealers can offer expert maintenance, repair, and survey services, as well as complete engine, transmission, and generator overhauls. If you are seeking top-quality marine diesel solutions, products, or services, don’t wait to contact our Marine Diesel Specialists and Gulf Coast Diesel Service.

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Boat Fuel Consumption Calculator

Author: Calculator Academy Team

Last Updated: July 25, 2023

Enter the specific fuel consumption, horsepower, and fuel-specific weight into the calculator to determine the boat fuel consumption.

• BSFC (Brake Specific Fuel Consumption) Calculator
• Brake Horsepower Calculator
• Boat Speed Calculator
• Hull Speed Calculator
• Sailboat Value Calculator

Boat Fuel Consumption Formula

The following formula is used to calculate a boat’s fuel consumption.

• Where FC is the fuel consumption at max throttle (gallons/hour)
• Gas = .50 lbs per HP
• Diesel = .40 lbs per HP
• HP is the engine horsepower
• Gas = 6.1 lbs per gal
• Diesel = 7.2 lbs per gal

To calculate boat fuel consumption, multiply the fuel consumption at max throttle by the engine horsepower, then divide by the fuel specific weight.

What is a boat fuel consumption?

A boat fuel consumption is a rate at which the engine on a boat consumes fuel, typically measured in gallons per hour.

The fuel consumption depends on the horsepower of the engine, throttle level, and type of fuel used.

How to calculate boat fuel consumption?

Example Problem:

The following example outlines how to calculate the fuel consumed by a boat engine.

First, determine the horsepower of the engine. In this example, the boat has one engine with a horsepower of 400 HP.

Next, determine the specific fuel consumption and fuel-specific weight of the fuel. In this example, the fuel is gas so these values are .50 and 6.1 respectively.

Finally, calculate the fuel consumption at max throttle using the formal above:

FC = (SFC * HP) / FSW

FC = (.50 * 400) / 6.1

FC = 32.786 gallons per hour

To determine how much fuel would be used at half throttle/half horsepower, divide the result by 2.

32.786 / 2 = 16.393 gallons per hour

Boat Fuel Consumption: 5 Tips for Measurement, Efficiency, and Savings

Table of Contents

Boat fuel consumption can be a rather significant expense , and it’s one that goes up as gas prices rise. While it’s true that you have to pay to play, there are some measures boaters can take to cut down on this expense as the price of gas goes up.

Here are five tips to help save money on marine fuel for your boat:

• Lighten your load by removing excess gear and weight.
• When operating, bring the boat on plane, then leave the throttle alone.
• Understand how to properly trim your boat—if the bow seems high, trim it down.
• Ensure your boat’s propeller is the right size, material, and model to maximize performance.
• Keep the bottom of your boat’s hull clean and smooth.

Read on for further details and instructions on implementing each of these five tips, and be sure to use a boat fuel consumption chart to understand your engine’s ideal fuel economy.

Own a Boat? Learn How to Offset the Cost of Ownership by Listing on Boatsetter

1. Lighten the Load

Many boats get loaded down over time without anyone even noticing, and the heavier your boat is, the less efficient it will be. While some gear is absolutely necessary, some other stuff may not be — and when added up it can weigh a ton.

• Think about removing that extra anchor rode, the big box of fishing weights, dishware that never gets used, and similar items from the boat.
• Also consider the water and waste tanks, if your boat has them. Can you get by with a half-full water tank? If so, you’ll shed eight pounds per gallon. W
• When is the last time you pumped out the waste tank? Again, you can remove a lot of weight from the boat by lowering its level.

2. Bring the Boat on Plane, then Leave the Throttle Alone

As is true with cars, boats tend to burn less gas at slower speeds. Boats are different, however, in that most get the worst fuel economy just below planning speed and the best economy just above it.

There are certainly some exceptions (such as some trawlers and some boats propped to go very fast) but as a general rule, the average outboard powerboat will break onto plane right around 3000 to 3500 RPM. And in most cases, this is where they get the best cruising fuel economy.

Note that on newer board your MPG may be displayed on a gauge at the helm . In this case, simply eyeball that gauge and you can see just when the boat’s getting its peak mileage.

3. Tweak the Trim

Most boats run best on an even keel at a slight inclination of just two to four degrees. But depending on the boat’s design and the weight distribution of gear and passengers, you may need to adjust engine or drive trim and/or trim tabs to get it running this way.

If the bow seems to dig in try trimming the bow up a bit, and if you have to crane your neck to see over the bow, trim the bow down some.

4. Make Sure You Have the Right Propeller

Few boaters ever change propellers to see if they can gain a performance edge, but doing so can add several MPH to your cruising speed, which equates to more miles traveled for less gas burned .

Finding the ideal prop for your boat may take some experimentation; remember that your goal is to turn wide-open RPM in the middle of the manufacturer’s recommended range, and adding an inch of pitch will decrease rpm by about 200, while dropping by an inch will increase RPM by about the same amount.

Also note that switching from an aluminum propeller to a stainless-steel model can gain you one to three MPH, as well.

5. Keep the Bottom of Your Boat Clean

Few things sap speed and increase fuel consumption like a dirty bottom. While antifouling paint will keep most of it at bay, its effectiveness can drop with age. Plus, even a freshly-painted boat can develop a layer of scum or slime, and many boats have unpainted underwater surfaces like transducers that growth can adhere to.

• So, if your boat lives in a wet slip it’s a good idea to pull up to a sandbar or beach once in a while and gently scrub the bottom.
• If there are any areas where more substantial growth has attached, scrape them clean with a rigid object that won’t damage the surfaces, like a plastic putty knife.

Employ all of these tips, and your boat may burn one, five, or even 10 gallons less fuel on your very next trip. Every boat will be different, of course, but no matter how large or small it may be, at today’s gas prices those saved gallons can add up to some serious cash in the bank.

Earn an Average of $20,000 or More by Listing Your Boat for Rent on Boatsetter

With over three decades of experience in marine journalism, Lenny Rudow has contributed to dozens of boating and fishing publications and websites ranging from BoatU.S. Magazine to BDOutdoors.com. Rudow is currently the Angler in Chief at Rudow’s FishTalk , he is a past president of Boating Writers International (BWI), a graduate of the Westlawn School of Yacht Design, and has won numerous BWI and OWAA writing awards.

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Fuel Consumption of Larger Yachts

Discussion in ' Boat Design ' started by Slimjim , Sep 14, 2012 .

Slimjim New Member

Hi to all and thanks from a lurker. I'm thinking of getting a larger motoryacht to live aboard,as the values of the 10-15 year old yachts have really dropped with the meltdown and what not. I have ocean front property,so docking is no problem. I have looked and emailed brokers,but can't find any info on consumption at lower speeds-it's not so much the amount as we will use it rarely- just need to know what kind of range I may expect for a 75-85' yacht like a Sunseeker. Any hints will help and thanks again. Jim  

WestVanHan Not a Senior Member

Hi slim and welcome to the board. I've had those thoughts lately too..the prices have dropped,and any on the market have been so for years..so the owners need to get realistic. I have a small oceanfront cabin up the coast-but docking in front of it is not a good thing and as you know docking anywhere near Vancouver for something that big is very hard and $$$$$. Otherwise I'd be so tempted. Anyways,I was on a charter Sunseeker 84 Manhattan. Almost all of them came with the 1400hp Cat 3412-which is not a too desirable state of affairs. If they've been used to any of the hp potential they tend to have problem$$. Or when..and I mean "when" not "if" one of them drops a valve,a liner fails,a skirt breaks,or the aftercooler leaks and breaks your pistons-pull it out and throw in a reman Cummins QSB11 as the main driver. Anyways I remember at 10 knots/1000 rpm both engines/ it was 90 litres an hour. I don't see why not at 7-8 knots, you'd be down to 50-60 litres an hour. You'd want to open them up a couple minutes every hour. At 22 knots it's 400+ litres an hour. Look into Fairline,Princess/Viking-the Italian boats seem to be more expensive.  

TANSL Senior Member

Search with Google catalogs of engine manufacturer. They indicate consumption, generally, in grams / hp-hour. (about 200 gr/hp-h) They do not say that consumption occurs under ideal navigation conditions, with the engine at 80%, but is data that can be used with caution. See attached example.  

Attached Files:

Yamaha FL250AETU.doc

Trying to be helpful tansl, but without knowing how much hp it takes to move the yacht at a speed-charts and specs are useless.  

WestVanHan said: ↑ Trying to be helpful tansl, but without knowing how much hp it takes to move the yacht at a speed-charts and specs are useless. Click to expand...

Tad Boat Designer

Princess V72 C32 Cats 1000 RPM = 11.3 knots and 40gph = range of 295 miles Sunseeker 70 1550 HP MANs 1000 RPM =10 knots and 23gph = 500 miles range 1250 RPM = 11 knots and 42.5gph = 300 miles range 1500 RPM = 18.3 knots and 51gph = 399 miles range (best mpg) Those are US gallons  

Squidly-Diddly Senior Member

not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running. Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls.  

mydauphin Senior Member

If you have to ask... You cant afford it. Owning a big yacht is not about fuel, everything else is expensive too. Keep it below 50' and you will save tons of money.  

mydauphin said: ↑ If you have to ask... You cant afford it. Owning a big yacht is not about fuel, everything else is expensive too. Keep it below 50' and you will save tons of money. Click to expand...

TANSL said: ↑ Well, you tell me how you will meet the consumption?. Or do you think that yachts consume according to their length? B.R. Click to expand...

OK WestVanHan, sorry if I said something wrong but I do not understand why we can not use information that the engine manufacturer provides. Cautiously or wrongly, is often the best information we can provide. On the other hand, you're right, not only are the main engines that consume fuel, we must take into account all other consumers of fuel in the boat. So I think that neither yours nor my data can answer this question. Finding a yacht consumption, and therefore its autonomy, is quite complicated. But. if the manufacturer gives us a data, why not use it? It's not that I try to help but not answering the question. It is, in my opinion, that if we do not use data as I propose is very difficult to estimate the consumption / autonomy of a ship, with rigor.  

TANSL said: ↑ So I think that neither yours nor my data can answer this question. Click to expand...

Jim; forgot to mention there's been a Sunseeker 94 docked here in Vancouver for 12-13 years.I know it had very very rarely been away from the dock up to 2009. I walked and biked past it almost every day. And the last 4 years AFAIK it' hasn't been away much either,I'd guess for haulouts or runs. It was on the market continuously until a couple years ago-but I'd guess they still think it's worth the $4M they were asking for it in 2001. Oh and the tankage on the 84 was 7500 or so..so at 10 knts you should go ~850 miles to empty-more than enough to circumnav. the Island and spend a year parked in the Broken Group if you wanted.  

FAST FRED Senior Member

"not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running." Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls. " The past 40 years or so the US Navy has been installing two engines tied to a gear box and single shaft on landing craft. My preference would be for a smallish diesel to operate efficiently at 80% power 90% rated RPM for long range cruising, and a stock motor for the times to make a big wake and de-fuel the boat rapidly. 3-71 and 6-71 or 80Hp Deere tractor with Intl DT 466 ,,more Modern , might use less fuel Engine can be disconnected under way , but requires shut down to engage to reengage either engine. No big deal.  

• Advertisement:

FAST FRED said: ↑ "not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running." Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls. " The past 40 years or so the US Navy has been installing two engines tied to a gear box and single shaft on landing craft. My preference would be for a smallish diesel to operate efficiently at 80% power 90% rated RPM for long range cruising, and a stock motor for the times to make a big wake and de-fuel the boat rapidly. 3-71 and 6-71 or 80Hp Deere tractor with Intl DT 466 ,,more Modern , might use less fuel Engine can be disconnected under way , but requires shut down to engage to reengage either engine. No big deal. Click to expand...

Fuel consumption opinions

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Help Needed with stringer mods to fit Underfloor fuel tank

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How Much Does It Really Cost To Own & Run A Superyacht?

If you think it’s hard work maintaining your tinny for weekend fishing trips up the river just take a minute to think about the costs involved in owning your own superyacht. Over the past decade, these behemoths of the sea have become the pinnacles of wealth and success for those with only the deepest of pockets.

These luxurious floating mansions are reserved for Russian billionaires, Saudi Princes and Hollywood celebrities, but if you’re lucky enough to win the lotto you might be able to join the upper echelon of society and own your own superyacht also.

The general rule? On average, owners pay 10% of the yacht’s value in up-keep costs per year, not including crew wages.

Initial Cost Of A Superyacht: ~ $10 Million

The cost of a superyacht varies depending on the size and technology it comes with. Chelsea owner Roman Abramovich’s Eclipse is a 533-foot monster that cost the billionaire $500 million, while America business mastermind David Geffen spent a cool $200 million on his 454-foot superyacht.

Registering Your Yacht: ~ $2,500

Just like any normal vehicle you have to register your brand new superyacht. This is a very important first step as choosing the flag and country of origin you want to register your yacht in can give some great benefits, especially when it comes to tax cuts. The Cayman Islands is a favourite amongst the super rich due to its tax breaks and relatively cheap registration fee, especially when compared to the actual cost of the yacht.

Insurance: ~ $353,850

As well as registering your new nautical explorer you’re going to want to make sure it’s insured. As you can imagine, insuring something as expensive as a superyacht isn’t cheap, so expect to fork out a few hundred thousand every year to make sure you’re covered.

Dockage: – $942,000 (Purchase)

The price varies from port to port across the world, with some docks charging up to six grand a night for casual slots. This 100-foot slot in Antibes is going for a lazy 590,000€ ($942,000) if you’re in the market to buy.

If you want a spot in Port Hercules over Formula 1 weekend, you’ll be looking at $35,000 AUD for a Zone 1 spot from May 20th till May 27th for our yacht size in question, which really isn’t too outrageous.

Fuel: ~ $472,000

If you think everyday fuel prices for your automobile are expensive than you might want to turn away now. Using around 400 litres of fuel an hour, a 100-foot superyacht is going to set you back another half a million to make sure you don’t run out of gas in the middle of the ocean if in use for the majority of the year.

Maintenance & Repairs: ~ $400,000

Like anything mechanical, a superyacht is prone to suffering wear and tear over the years. From routine maintenance to fixing blown motors and electrical equipment, the annual cost can be extravagant but is part and parcel of owning such an expensive toy.

Crew: ~ $876,000

Unless you’re a trained captain steering your own yacht and making sure the day to day running goes smoothly, you’ll have to employ staff to over see operations. Captains cost roughly $1,400 per year per foot of boat – that’s $156,000 or so to command a mere 100-footer according to Forbes.

Deckhands and stewards are relatively cheap at $40,000 to $70,000 per year which is supplemented with you shouting them accommodation and food, but a good chef will cost you at least $100,000 a year. You’ll also need roughly one deckhand for each guest, and we’re assuming you can comfortably fit 8 amigos. And did we mention an engineer? Because hey, we all know boats break down all the time. That’ll set you back at least another $140,000.

Total: ~ $13 million

If you add up the initial cost of your 100-foot superyacht and your yearly expenses you’re looking at roughly $13 million for the first year, then around $2.1 million every year after to maintain it (assuming you pretty much live aboard and minus the purchase costs of the berth & yacht). So the short answer? A fuckload. Maybe in another life.

RELATED: The 750-foot Project Valkyrie will be the world’s largest superyacht

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Sailing Catamaran Fuel Consumption Data From Owners!

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As much as I love turning off the engine and only using the sails, sometimes I have found myself in situations where I was forced to rely on engine power. Situations like a brewing storm or the need to head straight into the wind.

Understanding catamaran fuel efficiency and how far you can go on a certain amount of fuel is vital to keep you away from bad situations.

Catamarans are more (fuel) efficient than a monohull (regular sailboat). During calm conditions, while powering under one engine, fuel consumption is between 0.3 gallons per hour (gph, of diesel) and 1.1 gph according to the data collected.

Below I have gathered fuel consumption data from catamaran owners.

Table of Contents

What Impacts Catamaran Fuel Economy?

Worth noticing is that going from one engine to two engines doesnt increase your speed by very much, but it doubles your fuel consumption.

Turning on engine number two will give us seven kts and fuel consumption of 4 L per hour. That’s actually a pretty good “return on investment” since the Catalac only gets one kts of extra speed while doubling fuel burn. Slowing down will almost always save fuel ( source )

Below are more of the data I have collected, let’s take a look at what it says.

The conclusion? Speed comes at a premium.

Time until empty

This column is based on the lowest possible fuel consumption with one engine. This is the number of hours that you are able to cruise when starting with full fuel tanks.

Distance until empty

This is how far in Nautical Miles, you are able to sail at cruising speed with one engine.

How You Can Improve Sailboat Fuel Efficiency, 10 Tips!

1. drive your boat as you drive your car.

Ok, maybe not as how you actually drive it, but the way your teacher told you to drive it, accelerate slowly, keep a steady throttle, and avoid high revs.

Every engine has an RPM (revolutions per minute) where the engine works the most efficiently; this is the sweet spot where you want to drive the boat.

This is usually around 75-80% of max RPM.

This RPM is not the same as the RPM of your boat’s top speed, but something you should consult is the datasheet of your engine, usually, this is somewhere between 2000- 2900 RPM on diesel, and 3000 – 4000 RPM on a gasoline engine.

Save fuel on your catamaran by   slowly accelerating and then keeping your boat in the RPM range stated in the datasheet; this will ensure you get the engine’s optimum efficiency.

Set the RPM, check if the speed is enough to get you where you want in the time you have, if you are ok with the numbers, then just relax and enjoy fuel economy at work (if there’s ever such a thing on a boat…)

2. Keep the Boat Light

Getting a boat to move requires energy, getting a heavier boat to move requires even more energy; keeping your boat light will significantly enhance your fuel economy.

Firstly, the boat will ride higher on the water; this means less underwater drag. Drag is something that dramatically impacts speed; this is one reason why Catamarans are faster than conventional sailboats/monohulls.

Removing weight can be done by only packing the stuff you need for the planned trip, this means that maybe you dont need full tanks of diesel and water, which can be more than a ton of weight. 

3. Use Your Sails When You Can

Using your sails when motoring will be more than doing just one of the two separately. See it as adding another engine, even if you were only doing 0.5 kts with the sails, these 0.5 kts will make the engine work less hard and thus decrease the amount of fuel needed to travel at the same speed.

Or, you can go faster with the same consumption.

4. Keep Your Hulls and Propeller Clean 

Keeping everything below the waterline clean, just as discussed above, the more surface area under the boat, the more drag.

If the surface is is also uneven due to barnacles, then this also increases drag.

This is important for the boat to move smoothly through the water, but it is also vital for the efficiency of the props. 

A prop that is uneven and not in a hydrodynamically good state will be less efficient and will require higher RPMs to move the boat at the same speed as a clean and shiny one.

5. Avoid Going Straight into the Wind

Since a catamaran has such a high profile, it will catch wind even though there are no sails up, so if you head straight into the wind and waves, this will definitely slow down the boat’s speed.

Try going close to shore, where the winds might change in a favorable condition.

6. Running One or Two Engines?

On most catamarans you can run either one or both engines, as stated in the tables above, running two engines is mainly for increasing speed and not fuel efficiency.

You might gain a knot or two, but your fuel cost will almost double in most cases. 

If you choose to run your cat only on one engine, there are some significant savings to be done; just make sure you dont overstrain the machinery. Stay within reasonable RPM, as stated by the manufacturer, around 2000-3500. And when you need to go quick, start up the other engine and head for that bridge opening in time 🙂

The last tip on running two engines, try to run them for about the same amount of hours, this means they will be serviced and repaired at around the same time and will be in the same good condition.

7. Keep Your Engines in Good Shape

Service and maintenance play a part in fuel economy, although not as much as I think many people believe. Some aspects should be kept a careful eye on. Air filters can clog, this means the fuel to air mixture will be wrong, you won’t get the right amount of HP, and you will feel inclined to give it more throttle than needed.

Make sure you service or change your air filters regularly , so they are able to give your engines the fresh air they deserve! 

The same applies to fuel filters, although these usually can’t be inspected, make sure you change them according to your service manual , and if your dont have a manual, change it once a year.

Other stuff, such as timing, fuel pumps that you could check, but I would only mess around with those if you suspect that your fuel consumption is abnormally high.

8. Track Your Fuel Consumption

Every engine is a little bit unique if you find a way to measure your fuel consumption and record parameters such as; RPM, amount of diesel consumed, external conditions(waves, winds, currents, etc.), and boat condition (approximate weight).

Then you will know your fuel economy with reasonable precision. This makes trip planning more exact, and you dont have to bring extra fuel(increased weight). 

One way to measure is to get a fuel measure instrument such as this one ( Amazon link)

9. Using a Foldable prop

The foldable prop is just as it sounds; it is a propeller that can maintain two different positions.

When the prop is folded, the blades go from looking like a fan to something that makes way more hydrodynamical sense.

According to flexofold, the folding prop improves sailing performance by around 15%. Another cool thing is that once folded, the risk of getting stuck in a net or fishing line is also reduced.  

And when you turn your engine on and start revving it up, the blades fold out, and off you go!  

10. Electric conversion

So if you really want to save on diesel costs, then maybe an electric motor is an option. Although running on electricity isn’t free (you will have to charge them somehow), it can be a cheap option in the long run.

Electric conversions are getting more and more common and, therefore, also cheaper. The basic idea is that you switch your diesel engine for an electric motor, and instead of diesel fuel tanks, you will have a lithium battery bank.

These can be charged through solar, wind, or connected to a power source in the marina.

Going electric is different in some ways; let’s take a look. Firstly going electric is a more silent option.

You won’t have the diesel engine’s noise, although you will still have the noise from the prop, so just as an electric car is very silent when moving slow, once you get the boat going up to speed, the sound will also significantly increase.

Another more positive change is that you no longer will have to smell diesel fumes, refill diesel, or service all those parts. 

Here is a video of Sailing Uma running their electric motor.

How To Calculate Fuel Consumption

There is an easy way to calculate approximately how much an engine is able to burn at full throttle.

The calculation is an estimate and is based on full-throttle action, something that hopefully you won’t have to do for much longer than a few minutes at a time.

The calculations will give you an idea of how much fuel you will need. 

Are Catamarans More Efficient than other Sailboats?

Due to the low drag (small wetted surface), low weight (no keel), and narrow hulls catamarans are more fuel-efficient than a comparable keelboat/monohull. This makes a catamaran more efficient whether under sail or when motoring.

Catamarans will therefore burn less fuel than heavy keelboats.

The lower weight is mainly due to not needing a lead keel to balance the forces interacting with the sails. There is no need for a keel since the catamaran is stabilized by having a wide beam(that means the boat has a broad base).

When the wind acts on the sail and pushes it to one side, the force is transferred to the leeward hull(the side that is not faced towards the wind).

A boat that has less drag, and weighs less, will need less energy to move. This means your boat will go faster at the same wind speed or if you are motoring, the ship will use less fuel.

How To Calculate Fuel Costs

Before you are able to calculate your fuel costs you need to gather some information. These are;

Approximate hours(h) you will run the engine (s) Approximate hours(h) you will run the generator Gallons per hour, gph, Generator Gallons per hour, gph, engine Price of fuel

Once you have gathered the information you can continue to the next step.

(Engine time in hours * gph Engine) * Price of Fuel = Cost of Engine Fuel (Generator time in hours * gph Generator) * Price of Fuel = Cost of Generator Fuel Cost of Engine Fuel + Cost of Generator Fuel = Total Fuel Cost 

This is a basic equation you can use when summing up the total cost of your fuel usage. You have to take into consideration different fuel costs if you’re using a standalone gasoline generator.

If you dont have a standalone generator, but you need more electricity I can recommend this one from Honda, it is the same one that I used when I was sailing the Caribbean, it is not the most high-end, but it did what it was supposed to.

Link to Amazon (actually they do not seem to have the one I used, but this looks similar)

Why Do Catamarans Have Engines?

Sailboats have diesel or gasoline engines for a few reasons; to maneuver in and out of a marina, travel when there is no wind, generate electricity, and increase speed when there is little wind.

You might think that having an engine on a sailboat is unnecessary, you have the sails, right? 

Well, sailing is fantastic, but it is tough to sail in a confined area such as in a marina or through a tight section through a canal.

If you want to go upwind, many times on a catamaran, it is much faster and more comfortable to motor straight into the wind instead of tacking (turning from one side to another).

Another aspect is when there is wind but only enough for maybe 1-2 knots; then, you can combine motoring with sailing to make the boat faster and more efficient.

How Long Can You Run The Engine on full throttle?

This is a question I sometimes get; there are different ways to answer this.

The longest time you can continuously run your diesel or gasoline engine on full throttle is until it either overheats, runs out of gas, or gets destroyed.

That’s the short answer; the long answer is that it depends on the engine’s condition, the load on the engine, and how good is the cooling

Let’s start by looking at engine condition. If you want to get the maximum possible horsepower out of your engine for the most extended amount of time you should know that it’s going to take its toll on the engine.

This is not something I would recommend if the engine is something that you are dependent upon working, 

A well-maintained diesel or gasoline engine can go for days on full throttle as long as the engine load is balanced, hindering it from over-revving and causing it to break.

This is under the assumption that there is necessary cooling to the engine, which is not always the case if you are talking about a catamaran or any other engine that is in confined spaces and made for reasonably low RPM.

If all of those criteria are met, it will probably run until there’s no more diesel in the tanks.

Here are Some of My Favorite Catamaran Cruising Resources

Thank you for reading this article. I hope you found it helpful as you hopefully start your sailing adventures. Here are some resources that I use as a sailor that I hope you’ll also find helpful. These are affiliate links, so if you do decide to use any of them, I’ll earn a commission. But in all honesty, these are the exact things that I use and recommend to everyone, even my own family. Sailboats: If you’re looking for the best boat to suit your needs, I would recommend a catamaran. If you’re interested, I can show you the differences between catamarans and other types of sailboats .

Books:  For getting started, I really like  Cruising catamarans made easy . It is actually a textbook from the American sailing association; it is used to get a cruising catamaran certification. There are some other great books, and I have compiled a list of books about cruising catamarans that you will find useful.

Communication:  Being out on adventures, whether it be sailing or climbing mountains, good communications are essential to being safe. I recommend two things Google fi (incredibly simple cellular data all over the world) and Garmin inreach mini (for text and voice in remote areas without cell coverage)

Sailing courses: Online sailing courses are great for beginners starting out their sailing career; it’s an efficient way of learning the basics of navigation, throttle controls, and maritime safety. I suggest starting with two free courses from NauticEd .

To see all my most up-to-date recommendations,  check out this resource  that I made for you!

Owner of CatamaranFreedom.com. A minimalist that has lived in a caravan in Sweden, 35ft Monohull in the Bahamas, and right now in his self-built Van. He just started the next adventure, to circumnavigate the world on a Catamaran!

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Andytk5 New Member

What are the ball park fuel burn numbers (gph) on one of these vintage boats with proper mechanical condition mains when cruising at 10-15 kts? How about running the gensets at anchor? Just looking for some ideas, thanks.

Henning Senior Member

At 10 kts, figure around 30gph total with gen set, genset alone will be about 1gph for typical light load. At 15kts you'll be close to double that since a 70'er will be climbing hard on the bow wake by then. 8-9kts ad you could be below 20gph. If you have old 2 stroke GMs add 30-45%

chesapeake46 Senior Member

I had no idea the 2 strokes were THAT much less efficient to run. At today's and future fuel cost it really may be better to repower from a 671 to a newer motor !

Alright, that gives me some idea of where it will fall, I was really interested to know the genset fuel burn so thanks. More specifically a Burger similar to this one, http://www.**************/boats/1965/Burger-Classic-1984935/Coral-Gables/FL/United-States as well as this one, http://www.**************/boats/1988/Burger-Cockpit-M-y-W-flybridge-1327348/Norfolk/VA/United-States Also buying a boat this age aside from engine repair what are some of the major issues potential buyers run into? Thanks.

Pascal Senior Member

both are basically a 10kts boat... forget trying to push it over 10kts, at 13 kts your fuel burn will be well over double, makes no sense. at or just under 10kts, these boats should burn no more than 20GPH total on the mains, even with DDs. for instance, a 58 Hatt MY with the same 8V92s burns about 10 to 12GPH at 9kts... these is obviously a larger boat but not burning 20GPH + 30 to 45% for the DDs... again, dont' believe the 13kts cruise speed, they simply dont' make a lot of sense unless you have to run from some weather. as to maintenance, teh engines are jsut part of the costs... Air con is a big one usually and obviously on a alum. boat, corrosion and paint can be very $$$... it all depends on teh condition of the boat.

chesapeake46 said: I had no idea the 2 strokes were THAT much less efficient to run. At today's and future fuel cost it really may be better to repower from a 671 to a newer motor ! Click to expand...

Seems like some of the older Hatteras' in this vintage may have a higher speed but maybe you get into sportfish level fuel burn? What would one similar to this burn if you were to run the DD 12V71's at the 10kt or so range? Similar to the Burgers? And then have the higher speed when needed? http://www.**************/core/list...nits=Feet&access=Public&listing_id=12064&url=

Andytk5 said: Alright, that gives me some idea of where it will fall, I was really interested to know the genset fuel burn so thanks. More specifically a Burger similar to this one, http://www.**************/boats/1965/Burger-Classic-1984935/Coral-Gables/FL/United-States as well as this one, http://www.**************/boats/1988/Burger-Cockpit-M-y-W-flybridge-1327348/Norfolk/VA/United-States Also buying a boat this age aside from engine repair what are some of the major issues potential buyers run into? Thanks. Click to expand...

That is some great info, I must thank you for your thoughtful input. If I were to consider one of these older boats is there a particular builder/brand that has held up better than the others?

Andytk5 said: Seems like some of the older Hatteras' in this vintage may have a higher speed but maybe you get into sportfish level fuel burn? What would one similar to this burn if you were to run the DD 12V71's at the 10kt or so range? Similar to the Burgers? And then have the higher speed when needed? http://www.**************/core/list...nits=Feet&access=Public&listing_id=12064&url= Click to expand...

I'm sorry, I meant to say for the boat itself. Is there a builder I should stay away from more than others? I have been looking at older Burgers, Browards, Hatteras', etc.. I just didn't know if one had a better reputation than another?

Andytk5 said: That is some great info, I must thank you for your thoughtful input. If I were to consider one of these older boats is there a particular builder/brand that has held up better than the others? Click to expand...

Andytk5 said: I'm sorry, I meant to say for the boat itself. Is there a builder I should stay away from more than others? I have been looking at older Burgers, Browards, Hatteras', etc.. I just didn't know if one had a better reputation than another? Click to expand...

Very good. I have looked at alot of them and do like them. That is the main focus for this boat. East coast of Florida and maybe even to Costa Rica for a few years to live on the boat there. Major features 70' and larger, we have considered are a large aft deck, front pilot house, decent kitchen, sun area and second station above salon, large master, and at least one other state room that has a queen or larger, and then one or two other rooms. Thanks for your help Henning!

if you're concerned about maintenance costs (arent' we all...) maybe you should stay away from an alum hull and the related corrosion and paint bubling issues. from a built/maintenance point of view, it's hard to beat hatteras. Not only are they solid glass but the fuel tanks are fiberglass as well and will never need to be replaced (on diesel boats...) All the plumbing is heavy duty copper (fuel and water lines) which will last more than 20 years. mines are 40 years old and solid. Stringers are glass around foam, with the foam not being structural. I believe older Bertrams (and others) used glass encapsulated wooden stringers where the wood is structural, until it rots... In my experience, both on my own boat and boats i've captained, air con has been the most expensive system with compressor and air handlers replacements, some way before 20 years. Many agree that the newer compressors dont' seem to last as long as they used to... Personally i think it's hard to beat the looks and quality of a burger or broward but i'd be concerned about the maintenance required by the alum. hull. among the glass builders, you really cant' go wrong with a Hatteras.

Capt J Senior Member

dennismc Senior Member

Just don't go running turbocharged engines for long preiods below 1600 rpm to try and save fuel.Will wear them out before their time. If you want to run a 70 ft boat at 10kts most of the time look for naturally aspirated engines.

dennismc said: Just don't go running turbocharged engines for long preiods below 1600 rpm to try and save fuel.Will wear them out before their time. If you want to run a 70 ft boat at 10kts most of the time look for naturally aspirated engines. Click to expand...

Fishtigua Senior Member

I'm with Henning on this one. The 'B' Series 6 Cummins is great for this sort of use. It can run well at lower speeds and then perform well as needed. As a mega plus, no stupid electronics to go wrong too.

Pascal said: if you're concerned about maintenance costs (arent' we all...) maybe you should stay away from an alum hull and the related corrosion and paint bubling issues. from a built/maintenance point of view, it's hard to beat hatteras. Not only are they solid glass but the fuel tanks are fiberglass as well and will never need to be replaced (on diesel boats...) All the plumbing is heavy duty copper (fuel and water lines) which will last more than 20 years. mines are 40 years old and solid. Stringers are glass around foam, with the foam not being structural. I believe older Bertrams (and others) used glass encapsulated wooden stringers where the wood is structural, until it rots... In my experience, both on my own boat and boats i've captained, air con has been the most expensive system with compressor and air handlers replacements, some way before 20 years. Many agree that the newer compressors dont' seem to last as long as they used to... Personally i think it's hard to beat the looks and quality of a burger or broward but i'd be concerned about the maintenance required by the alum. hull. among the glass builders, you really cant' go wrong with a Hatteras. Click to expand...

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When you really need to get from Florida to the Bahamas in under an hour

You might not choose to waterski behind a superyacht, but what if you could? Larger boats have traditionally been slower than shorter models, but newer power plant designs and engine combinations are changing the paradigm. Fila Group ‘s  AB Yachts  recently built a 100-foot  AB100  superyacht named Spectre for a private buyer with a need for speed, according to Robb Report .

The Spectre’s new owner didn’t appreciate the 25-mph top end of his previous yacht and wanted a roomy and well-appointed vessel that could get him where he wanted to go a lot faster than his last boat. AB Yachts, which specializes in fast open motor yachts with waterjets, delivered on the promise, more than doubling the performance of the owner’s previous boat. Spectre has a top speed of 62 mph and a cruising speed of 52 mph.

The Specter has three MAN V-12 1,900 hp diesel engines, designed specifically for use in yachts 100 feet and longer. The AB 100 has three Marine Jet Propulsion waterjet thrusters paired with the diesel mills. Waterjets are used for navigation and added speed. According to AB Yachts, Spectre is able to run at full speed with “no vibrations and in total stability and maximum comfort of navigation.”

Spectre has a 22-foot beam. The main deck saloon and master suite are full-width. The stern has a sun deck and entertainment area with a standard garage area converted into a beach house. Buyers can configure the roomy interior to suit their own needs.

AB Yachts’ designs range from the AB 58 to the AB 145. In each case, the number represents the length in feet. Because the cutoff length for superyachts is 24 meters (78 feet), the 30.5 meter AB100 qualifies for the designation and is the “smallest” of the AB Yachts models to do so. Licensing, registration, and operation regulations vary by boat class and by country and can be more onerous than for shorter vessels, but for superyacht bragging rights , the 24-meter class is the benchmark.

And in the case of the AB 100 Spectre, there’s no sacrifice in speed for the longer length. Notably, there is no mention of fuel consumption, although for superyacht buyers, fuel costs may not be a significant consideration.

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Let there be no doubt: CES isn’t just alive in 2023; it’s thriving. Take one glance at the taxi gridlock outside the Las Vegas Convention Center and it’s evident that two quiet COVID years didn’t kill the world’s desire for an overcrowded in-person tech extravaganza -- they just built up a ravenous demand.

From VR to AI, eVTOLs and QD-OLED, the acronyms were flying and fresh technologies populated every corner of the show floor, and even the parking lot. So naturally, we poked, prodded, and tried on everything we could. They weren’t all revolutionary. But they didn’t have to be. We’ve watched enough waves of “game-changing” technologies that never quite arrive to know that sometimes it’s the little tweaks that really count.

CES is more than just a neon-drenched show-and-tell session for the world’s biggest tech manufacturers. More and more, it’s also a place where companies showcase innovations that could truly make the world a better place — and at CES 2023, this type of tech was on full display. We saw everything from accessibility-minded PS5 controllers to pedal-powered smart desks. But of all the amazing innovations on display this year, these three impressed us the most:

Samsung's Relumino Mode Across the globe, roughly 300 million people suffer from moderate to severe vision loss, and generally speaking, most TVs don’t take that into account. So in an effort to make television more accessible and enjoyable for those millions of people suffering from impaired vision, Samsung is adding a new picture mode to many of its new TVs. [CES 2023] Relumino Mode: Innovation for every need | Samsung Relumino Mode, as it’s called, works by adding a bunch of different visual filters to the picture simultaneously. Outlines of people and objects on screen are highlighted, the contrast and brightness of the overall picture are cranked up, and extra sharpness is applied to everything. The resulting video would likely look strange to people with normal vision, but for folks with low vision, it should look clearer and closer to "normal" than it otherwise would. Excitingly, since Relumino Mode is ultimately just a clever software trick, this technology could theoretically be pushed out via a software update and installed on millions of existing Samsung TVs -- not just new and recently purchased ones.

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Sustainable Aviation Fuel

Sustainable aviation fuel (SAF) is an alternative fuel made from non-petroleum feedstocks that reduces emissions from air transportation. SAF can be blended at different levels with limits between 10% and 50%, depending on the feedstock and how the fuel is produced. According to the International Civil Aviation Organization (ICAO), over 360,000 commercial flights have used SAF at 46 different airports largely concentrated in the United States and Europe.

Worldwide, aviation accounts for 2% of all carbon dioxide (CO 2 ) emissions and 12% of all CO 2 emissions from transportation. ICAO's Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) caps net CO 2 aviation emissions at 2020 levels through 2035. The international aviation industry has set an aspirational goal to reach net zero carbon by 2050 . SAF presents the best near-term opportunity to meet these goals. The Sustainable Aviation Fuel Grand Challenge , announced in 2021, brings together multiple federal agencies for the purpose of expanding domestic consumption to 3 billion gallons in 2030 and 35 billion gallons in 2050 while achieving at least a 50% reduction in lifecycle greenhouse gas emissions.

Renewable hydrocarbon biofuels offer many benefits, including:

Engine and infrastructure compatibility —SAF blended with conventional Jet A can be used in existing aircraft and infrastructure.

Fewer emissions —Compared with conventional jet fuel, 100% SAF has the potential to reduce greenhouse gas emissions by up to 94% depending on feedstock and technology pathway.

More flexibility —SAF is a replacement for conventional jet fuel, allowing for multiple products from various feedstocks and production technologies.

SAF can be produced from non-petroleum-based renewable feedstocks including, but not limited to, the food and yard waste portion of municipal solid waste, woody biomass, fats/greases/oils, and other feedstocks. SAF production is in its early stages, with three known commercial producers:

• World Energy began SAF production in 2016 at its Paramount, California, facility and initially supplied fuel to Los Angeles International Airport prior to supplying additional California airports.
• International producer Neste began supplying SAF to San Francisco International Airport in 2020 before expanding to other California airports in 2021 and 2022, as well as Aspen/Pitkin County Airport and Telluride Regional Airport, both in Colorado.
• Montana Renewables LLC began production in partnership with Shell at an existing petroleum production plant in 2023, supplying fuel to several partner airlines.

Additional new domestic plants are expected. Many airlines have signed agreements with existing and future SAF producers to use all their expected output. The U.S. Environmental Protection Agency (EPA) collects renewable fuel data as part of the Renewable Fuel Standard, which provides an approximate consumption for novel biofuels such as SAF. EPA's data show that approximately 5 million gallons of SAF were consumed in 2021, 15.84 million gallons in 2022, and 24.5 million gallons in 2023.

There are multiple technology pathways to produce fuels approved by ASTM and blending limitations based on these pathways. ASTM D7566 Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons dictates fuel quality standards for non-petroleum-based jet fuel and outlines approved SAF-based fuels and the percent allowable in a blend with Jet A. All three existing plants use the hydroprocessed esters and fatty acids pathway shown in the table on this page. New domestic plants using the alcohol-to-jet pathway with ethanol as a feedstock are expected. ASTM D1655 Standard Specification for Aviation Turbine Fuels allows co-processing of biomass feedstocks at a petroleum refinery in blends up to 5%.

Both ASTM standards are continuously updated to allow for advancements in technology to produce SAF. DOE's Sustainable Aviation Fuel Review of Technical Pathways provides details on various SAF production pathways. The pathways below represent only those currently approved by ASTM. Processes and tests exist for the approval of other feedstocks, fuel molecules, and blending limits, and the types of approved fuels will increase as these are evaluated through this process.

Distribution

SAF must be blended with Jet A prior to use in an aircraft. If SAF is co-processed with conventional Jet A at an existing petroleum refinery, the fuel would flow through the supply chain in a business-as-usual model via pipeline to terminals and onwards by pipeline or truck to airports. It is expected that SAF produced at biofuels facilities would be blended with Jet A at existing fuel terminals and then delivered to airports by pipeline or truck. The fuels could also be blended at the terminal directly upstream of an airport or thousands of miles away and transported by pipeline or barge to a terminal near the airport. There would be no change to fuel operations at the airport, as airports are expected to continue to receive blended fuel in the same pipelines and trucks as they do today. While it is technically possible to blend fuels at an airport, it is not the most practical or cost-effective method due to the need for additional equipment, staff, and insurance. Due to strict fuel quality standards, it is preferable to certify SAF as ASTM D1655 upstream of an airport.

Research and Development

The U.S. Department of Energy, the U.S. Department of Transportation, and the U.S. Department of Agriculture support research, development, and analysis for SAF.

Sustainable Aviation Fuel Grand Challenge

• Sustainable Aviation Fuel Grand Challenge Roadmap

Sustainable Aviation Fuel Review of Technical Pathways

Sustainable Aviation Fuel Tax Credit Analysis

• U.S. Airport Infrastructure and Sustainable Aviation Fuel

Toward Net-Zero Sustainable Aviation Fuel With Wet Waste–Derived Volatile Fatty Acids

Port Authority of New York and New Jersey SAF Study

More Information

Learn more about SAF at the links below. The Alternative Fuels Data Center (AFDC) and DOE do not endorse any companies or services described on this site (see disclaimer ).

• Commercial Aviation Alternative Fuels Initiative
• The International Air Transit Association (IATA) SAF
• MIT Greenhouse Gas Accounting Guidelines for Sustainable Aviation Fuel

Maps & Data

More Sustainable Aviation Fuel Data | All Maps & Data

Publications

• Evaluation of Performance Variables to Accelerate the Deployment of Sustainable Aviation Fuels at a Regional Scale
• Port Authority of New York and New Jersey Sustainable Aviation Fuel Logistics and Production Study

More Sustainable Aviation Fuel Publications | All Publications

Six presumed dead after cargo ship crash levels Baltimore bridge

BALTIMORE — A major Baltimore bridge collapsed like a house of cards early Tuesday after it was struck by a container ship, sending six people to their deaths in the dark waters below, and closing one of the country’s busiest ports.

By nightfall, the desperate search for six people who were working on the bridge and vanished when it fell apart had become a grim search for bodies.

“We do not believe that we’re going to find any of these individuals still alive,” Coast Guard Rear Admiral Shannon N. Gilreath said.

Jeffrey Pritzker, executive vice president of Brawner Builders, said earlier that one of his workers had survived. He did not release their names.

Up until then, Maryland Gov. Wes Moore had held out hope that the missing people might be found even as law enforcement warned that the frigid water and the fact that there had been no sign of them since 1:30 a.m. when the ship struck Francis Scott Key Bridge.

Moore expressed heartbreak after officials suspended the search for survivors.

"Our heart goes out to the families," he said. "I can’t imagine how painful today has been for these families, how painful these hours have been have been for these families."

It was a crushing blow to the loved ones of the missing men, who had waited for hours at a Royal Farms convenience store near the entrance of the bridge for word of their fate. 

Follow live updates on the Baltimore bridge collapse

The tragic chain of events began early Tuesday when the cargo ship Dali notified authorities that it had lost power and issued a mayday moments before the 984-foot vessel slammed into a bridge support at a speed of 8 knots, which is about 9 mph.

Moore declared a state of emergency while rescue crews using sonar detected at least five vehicles in the frigid 50-foot-deep water: three passenger cars, a cement truck and another vehicle of some kind. Authorities do not believe anyone was inside the vehicles.

Investigators quickly concluded that it was an accident and not an act of terrorism.

Ship was involved in another collision

Earlier, two people were rescued from the water, Baltimore Fire Chief James Wallace said. One was in good condition and refused treatment, he said. The other was seriously injured and was being treated in a trauma center.

Moore said other drivers might have been in the water had it not been for those who, upon hearing the mayday, blocked off the bridge and kept other vehicles from crossing.

“These people are heroes,” Moore said. “They saved lives.”

Nearly eight years ago, the Dali was involved in an accident. In July 2016, it struck a quay at the Port of Antwerp-Bruges in Belgium, damaging the quay.

The nautical commission investigated the accident, but the details of the inquiry were not immediately clear Tuesday.

The Dali is operated and managed by Synergy Group. In a statement, the company said that two port pilots were at the helm during Tuesday's crash and that all 22 crew members onboard were accounted for.

The Dali was chartered by the Danish shipping giant Maersk, which said it would have no choice but to send its ships to other nearby ports with the Port of Baltimore closed.

The bridge, which is about a mile and a half long and carries Interstate 695 over the Patapsco River southeast of Baltimore, was "fully up to code," Moore said.

National Transportation Safety Board Chairwoman Jennifer Homendy said that her agency will lead the investigation and that a data recorder on the ship could provide more information.

"But right now we're focusing on the people, on the families," she said. "The rest can wait."

President Joe Biden vowed to rebuild the bridge and send federal funds.

"This is going to take some time," the president warned. "The people of Baltimore can count on us though to stick with them, at every step of the way, till the port is reopened and the bridge is rebuilt."

Speaking in Baltimore, Transportation Secretary Pete Buttigieg echoed the president's promise.

"This is no ordinary bridge," he said. "This is one of the cathedrals of American infrastructure."

But Buttigieg warned that replacing the bridge and reopening the port will take time and money and that it could affect supply chains.

The Port of Baltimore, the 11th largest in the U.S., is the busiest port for car imports and exports, handling more than 750,000 vehicles in 2023 alone, according to data from the Maryland Port Administration.

Writer David Simon, a champion of Baltimore who set his TV crime drama "The Wire" on the streets of the city he once covered as a reporter, warned online that the people who will suffer the most are those whose livelihoods depend on the port.

"Thinking first of the people on the bridge," Simon posted on X . "But the mind wanders to a port city strangling. All the people who rely on ships in and out."

Timeline of crash

Dramatic video captured the moment at 1:28 a.m. Tuesday when the Dali struck a support and sent the bridge tumbling into the water. A livestream showed cars and trucks on the bridge just before the strike. The ship did not sink, and its lights remained on.

Investigators said in a timeline that the Dali's lights suddenly shut off four minutes earlier before they came back on and that then, at 1:25 a.m. dark black smoke began billowing from the ship's chimney.

A minute later, at 1:26 a.m., the ship appeared to turn. And in the minutes before it slammed into the support, the lights flickered again.

Maryland Transportation Secretary Paul Wiedefeld said the workers on the bridge were repairing concrete ducts when the ship crashed into the structure.

At least seven workers were pouring concrete to fix potholes on the roadway on the bridge directly above where the ship hit, said James Krutzfeldt, a foreman.

Earlier, the Coast Guard said it had received a report that a “motor vessel made impact with the bridge” and confirmed it was the Dali, a containership sailing under a Singaporean flag that was heading for Sri Lanka.

Bobby Haines, who lives in Dundalk in Baltimore County, said he felt the impact of the bridge collapse from his house nearby.

"I woke up at 1:30 this morning and my house shook, and I was freaking out," he said. "I thought it was an earthquake, and to find out it was a bridge is really, really scary."

Families of bridge workers wait for updates

Earlier in the day, relatives of the construction crew waited for updates on their loved ones.

Marian Del Carmen Castellon told Telemundo her husband, Miguel Luna, 49, was working on the bridge.

“They only tell us that we have to wait and that they can’t give us information,” she said.

Castellon said she was "devastated, devastated because our heart is broken, because we don’t know how they have been rescued yet. We are just waiting for the news."

Luna's co-worker Jesús Campos said he felt crushed, too.

“It hurts my heart to see what is happening. We are human beings, and they are my folks,” he said.

Campos told The Baltimore Banner that the missing men are from El Salvador, Guatemala, Honduras and Mexico.

Active search and rescue ends

The Coast Guard said it was suspending the active search-and-rescue effort at 7:30 p.m. Tuesday.

"Coast Guard’s not going away, none of our partners are going away, but we’re just going to transition into a different phase," Gilreath said at a news conference.

Maryland State Police Superintendent Roland L. Butler, Jr., said it was moving to a recovery operation. Changing conditions have made it dangerous for divers, he said. 

Butler pledged to "do our very best to recover those six missing people," but the conditions are difficult.

"If we look at how challenging it is at a simple motor vehicle crash to extract an individual, I'm sure we can all imagine how much harder it is to do it in inclement weather, when it's cold, under the water, with very limited to no visibility," he said.

"There's a tremendous amount of debris in the water," which can include sharp metal and other hazards, and that could take time, Butler said.

'A long road in front of us'

Built in 1977 and referred to locally as the Key Bridge, the structure was later named after the author of the American national anthem.

The bridge is more than 8,500 feet long, or 1.6 miles. Its main section spans 1,200 feet, and it was one of the longest continuous truss bridges in the world upon its completion, according to the National Steel Bridge Alliance .

About 31,000 vehicles a day use the bridge, which equals 11.3 million vehicles per year, according to the Maryland Transportation Authority.

The river and the Port of Baltimore are both key to the shipping industry on the East Coast, generating more than $3.3 billion a year and directly employing more than 15,000 people.

Asked what people in Baltimore can expect going forward, the state's transportation secretary said it is too early to tell.

"Obviously we reached out to a number of engineering companies, so obviously we have a long road in front of us," Wiedefeld said.

Julia Jester reported from Baltimore, Patrick Smith from London, Corky Siemaszko from New York and Phil Helsel from Los Angeles.

Julia Jester is a producer for NBC News based in Washington, D.C.

Patrick Smith is a London-based editor and reporter for NBC News Digital.

Phil Helsel is a reporter for NBC News.

Corky Siemaszko is a senior reporter for NBC News Digital.