1990 hunter 27 sailboat

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• Sailboat Reviews

The Hunter 27 is a boat built to a price--a low price--and it shows; but it may represent a good value.

The Hunter 27 is the smallest boat in the Hunter line, which runs up to 43′ in length. The Hunter 27 is a popular boat with first-time sailboat buyers, and with small-boat sailors purchasing their first auxiliary cruising boat. Since the boat was introduced in 1975, thousands have been built.

Like other boats with a reasonably long production run, the Hunter 27 has gone through minor changes since its introduction. Wheel steering is now standard. The boat utilizes a split backstay to allow a stern boarding ladder and to prevent the helmsman from hitting his head on a centerline backstay. All the ports open for ventilation, The mainsheet lead has been altered, and there have been other minor modifications, such as a switch to European-style pulpits and running lights.

Judging from the response of Hunter owners we’ve talked to, all Hunters, including the 27, are purchased for one reason: price. The Hunter 27 is just about the cheapest diesel-powered 27′ cruising boat money can buy.

In their advertising literature, Hunter stresses that efficiency in construction, standardization of components, and low overhead keep their prices low, To some extent, this is true, and it is neither new, nor is it anything to be ashamed of. The Herreshoff Manufacturing Company, known neither for cheap boats nor low quality, pioneered in component standardization and assembly-line construction.

By eliminating factory-installed options, every Hunter 27 can be built the same. No going to the stockroom for an optional item. No time-consuming reading of each boat’s specifications as it moves down the assembly line. There are trade-offs, however.

An inability to custom-tailor a boat. A lack of flexibility in deck layout. The Hunter 27 owner must customize his boat at the dealer level, or do it himself. This appeals to dealers, who often make as much on the installation of options as they do on commissions.

The Hunter 27 is a bit high-sided and sterile looking. High freeboard and a high cabin trunk are almost necessary in a 27, boat that claims over 6′ of headroom. The sterility comes from the Hunter bone white on bone white color scheme, and paucity of external teak trim. Exterior teak is to the fiberglass boatbuilding industry what chrome is to Detroit. There are no hull and deck color options.

Construction

Construction of the Hunter 27 is solid glass layup, with plywood reinforcement in high-stress areas such as winch mountings and locker tops. Gelcoat and finish quality of the hull molding are good. No roving printthrough is evident, and the hull is quite fair—more than can be said for many more expensive boats.

The hull-to-deck joint of the Hunter 27 is simple and strong. The hull molding has an internal flange molded at right angles to the hull at deck level. This flange is heavily coated with adhesive bedding, the deck molding is laid over the flange, and the joint covered with a slotted aluminum toerail which is through-bolted with stainless steel bolts at 6-inch intervals. This is an obvious and very satisfactory answer to the hull-to-deck joint problem. The flaying surfaces of the joint appear to match well, and the adhesive compound has squeezed out along the joint where it can be inspected.

Across the transom, the joint is less satisfactory. The gelcoat and putty with which the joint is faired at the stern was sloppy on every Hunter 27 we examined.

The keel of the Hunter 27 is a narrow, high aspect lead fin weighing 3,000 lbs. The shoal draft version has a much shallower lead fin weighing 3,200 lbs. The additional weight of the shoal keel is to make up for the shift in the vertical center of gravity of the boat that would occur if a shoal keel of the same weight as the deep fin were to be used.

The keel-to-hull joint has caused problems in some Hunter 27s. The narrowness of the lead keel at the point of attachment to the hull results in considerable leverage on the hull when the boat heels. Several Hunter 27 owners who returned The Practical Sailor boat owner evaluations report oilcanning of the hull, leaking keelbolts, or vertical misalignment of the hull and keel. We have observed this vertical misalignment in the Hunter 25, but we have not seen it specifically in the 27.

The chainplates of the Hunter 27 consist of stainless steel U-bolts fastened through the anodized aluminum toerail. No backing plates are used with these. The chainplates are likely to carry any load to which they will normally be subjected. However, a simple U-bolt, no matter how heavy, is a poor choice for a primary chainplate unless the arc of the U-bolt is radiused to the diameter of the clevis pin which goes through it, and unless the strain on the bolt lines up with its vertical axis, U-bolt chainplates of the correct configuration are used in some European boats, notably the Nicholson and Bowman lines. Both of these lines of boats carry Lloyd’s Bureau of Shipping classification certificates. We strongly suggest that Hunter 27 owners consider installing aluminum or stainless steel backing plates under their U-bolt chainplates, and check them periodically to be sure that the nuts are tight. With only two nuts on each shroud anchorage, this check is extremely important.

The rig is a modern, high aspect ratio masthead sloop. The mast is a deck-stepped, white Kenyon spar, supported by a wood compression column attached to the main bulkhead. We have seen no sign of compression stress in the Hunter 27 mast step.

Hunter uses gate valves on underwater skin fittings, We prefer seacocks. We also prefer some kind of shutoff valve on any skin fitting remotely near the waterline. Few builders provide them. Hunter is no exception.

Handling Under Sail

The Hunter 27 comes with a mainsail and 110% genoa. The total sail area with this configuration is 360 square feet, an average amount for a modern 7,000 lb boat. A larger genoa will be required for sailing in light-air areas.

Despite a ballast/displacement ratio of almost 43%, owners do not consider the Hunter 27 a stiff boat under sail. They also consider the boat’s performance under sail only fair to good. There are several reasons for the boat’s mediocre sailing qualities.

First of all, the boat comes factory-equipped with sails. This means cheaper sails, for they are bought in quantity by the builder. It also, almost inevitably, means sails that are not designed for specific local conditions. Average sails make for average performance.

There is no provision for headsail sheeting angle adjustment. Without a genoa track, all headsails must sheet to the slotted toerail. On a wide 27-footer with this arrangement, the headsail slot will rarely be the proper width for good windward performance.

With a small headsail, the lead will almost always be too far outboard.

There is also no traveler for the main sheet. This limits the creation of the proper angle of attack of the mainsail, and complicates draft control.

A relatively fat boat such as the Hunter 27 rapidly acquires weather helm as the boat heels. This is due in part to the asymmetry of the boat’s submerged sections. The judicious use of sail controls such as travelers, vangs, and flattening reefs greatly enhances the ability to keep the boat sailing on her feet, which will help reduce weather helm. Hunter 27 owners complain that the boat suffers from extreme weather helm.

Chainplates set at the outboard edge of the deck also compromise windward performance. This arrangement makes it almost impossible to close the slot effectively with a large headsail.

If the Hunter 27 were equipped with well-made sails, inboard chainplates, inboard and outboard headsail tracks, a good vang, and a mainsheet traveler, we suspect that there would be a substantial improvement in the boat’s windward ability. There would also be a marked difference in price. Should you desire to make these changes, the parts would probably cost upwards of $1,500. Then the problems begin. How do you attach the chainplates? Will the deck take the vertical loading that will be on the track? Can the boom handle heavy vang loads? We are not talking about turning the Hunter 27 into a hot racer. We are only talking about improving the performance of the boat to a reasonable level for cruising.

Windward performance, then, is one of the tradeoffs made for low price. Only the prospective purchaser, after considering how the boat is to be used, can decide how much that is worth. Since the shoal-draft Hunter 27 is more heavily ballasted than the deep-draft version, its stability is likely to be similar. However, the deep, high aspect ratio fin is likely to be more efficient.

Handling Under Power

With only eight horsepower to push around a 7,000 lb, high-sided boat, do not expect a Hunter 27 to be a sprightly performer under power.

In 1979, the power plant of the Hunter 27 was changed from the eight horsepower Renault diesel. The Renault diesels were relatively untried in the US marine market. The early Yanmar engines, though noisy and noted for their vibration, are also known for their reliability.

At least one owner we talked to was, to put it mildly, disappointed with the Renault installation. Although the engine runs well, the attachment of the shifting mechanism to the transmission lever has the disconcerting habit of vibrating itself loose. When docking, the results of this shortcoming could be less than amusing to both the boat owner and his insurance company.

Owners of Renault-powered Hunter 27s should definitely be aware of this potential problem.

Another owner reported leaking strut bolts and shaft wear due to improper shaft alignment, All engine installations should be realigned after the boat is launched for the first time. This should be a routine part of commissioning, but it rarely is. A given used Hunter 27 may not have had it done.

Engine access is good, behind the removable companionway ladder. There is partial soundproofing in the engine enclosure, but not enough to shield the interior from a substantial amount of noise.

Fuel capacity is 12.5 gallons, in an aluminum tank located in the starboard cockpit locker. The tank is held in place by a stainless steel strap, There is no grounding jumper between the fuel fill and the tank. This is in violation of the standards for fuel tank installation of the American Boat and Yacht Council, which sets minimum standards used in the industry.

Owners consider the boat underpowered with either the Renault or Yanmar engines. They consider the boat’s performance under power only fair to good.

Deck Layout

Because the Hunter 27’s decks are relatively free of sail control hardware, there are relatively few toe stubbers. Even the grayest cloud has a silver lining.

New Hunter 27s have international style running lights mounted on the bow and stern pulpits. These are far superior to the in-hull running lights on older Hunters, and better than those used on many more expensive boats. New boats also have a good-sized foredeck anchor well, incorporating a well-designed latch and a heavy stainless steel eye for the attachment of the bitter end of the anchor rode. The well has a large scupper which drains through the stem.

Although owners consider the cockpit of the Hunter 27 small, we find it comfortable for five, and certainly large enough for a 27′ boat. Wheel steering has definitely made the cockpit seem bigger. With five people in the cockpit, the stern of the boat begins to squat. A bigger cockpit would only encourage sailing with more people, causing the boat to squat even more.

Late models have Yacht Specialties pedestal steering. There is good provision for an emergency tiller, which is supplied with the boat.

Access to the steering gear is excellent, through the lazarette locker. Unfortunately, because the steering gear, scupper hoses, and exhaust hose go through this locker, it cannot be used for storage. To do so would be to risk damage to vital parts of the ship’s systems.

There is a large locker under the starboard cockpit seat. Unfortunately, because the fuel tank is located in this locker, nothing can really be stowed there without risking damage to the fuel system. Wet lines or sails stored in the locker would drip on the aluminum tank, inviting corrosion. Shelves installed in both these lockers would make them more useful.

To raise the cockpit sill above the level of the lowest cockpit coaming, the lower drop-board must be left in place, This complicates access below when underway, but having the companionway blocked up to deck level is essential for sailing in unsheltered waters or heavy weather.

The cockpit bulkhead slopes forward. This means that a dodger must be installed if one wishes to ventilate the cabin in rain or heavy weather.

The high cockpit coamings provide good backrests for those sitting in the cockpit. They should also help keep the cockpit dry. These coamings have moldedin sheet winch islands. The owner wishing to upgrade to winches larger than the standard Lewmar 7s will discover that the islands are too small for a much larger winch. For the owner who wishes to use a large genoa, this could be a real problem. Despite these shortcomings, the T-shaped cockpit is reasonably comfortable, and is one of the boat’s better design features.

The Hunter 27 is a roomy boat. Headroom is just over 6′ under the main hatch, and almost 5′ 10″ at the forward end of the main cabin.

The forepeak contains a double berth. Aft of that cabin is a full-width head. Newer Hunter 27s have a holding tank system. Older boats are likely to have portable heads.

The main cabin has settee berths port and starboard. These settees extend under the forward bulkhead. While this arrangement reduces seating area, it also allows more room for the galley and quarterberth. It’s a reasonable trade-off.

To port, at the aft end of the cabin, there is a quarterberth. A folding chart table is located over the forward end of the quarterberth. To starboard is the galley, with sink, two-burner alcohol stove, and icebox.

With eight opening ports, two opening hatches, and the companionway, ventilation in newer Hunter 27s is excellent at anchor in good weather. Older models have fewer opening ports. As with many boats, there is no provision for ventilation in heavy weather.

With a molded glass headliner, teak-finished bulkheads, solid teak trim, and teak cabin sole, the cabin has a finished appearance. There is good storage for a boat of this size for short-term cruising. Joinerwork is of fair stock boat quality.

Conclusions

A new Hunter 27 in the ’80s was about the least expensive boat in its class—far cheaper than many other boats of this size. The boat also comes standard with items that are optional on other boats, such as wheel steering, life jackets, anchor, and fire extinguishers.

However, it is not realistic to expect a boat that is 15% cheaper than another boat of the same size and type to be equivalent in quality. There is just so much that efficiency, standardization, and bulk buying can do toward reducing the price of a boat. Inevitably, the price of a boat is a function the time, materials, and incidental costs that go into it. There is no magic way to reduce the cost of building a boat.

The Hunter 27 graphically demonstrates how costs can be reduced. A great deal of time is saved in construction by hurrying finish work, by using staples instead of screws, by eliminating the necessity to customize each boat.

Hunter owners are the first to admit the influence that the low price of the boat had on their boat-buying decision. Many are happy with their boats, some are defensive about them, and others are really unhappy with them. For the relatively unsophisticated sailboat buyer—the new sailor, the powerboat convert—the Hunter 27 may represent a good value. As his experience grows, we expect he will be willing to pay more, in order to get more.

RELATED ARTICLES MORE FROM AUTHOR

Thank you for this article as I, a novice am about to rehab and deal with a 1978 Hunter. As I go through this I suspect many a sentence will ring in my mind to remind me what an experienced sailor has: time to reflect on learning experiences and sharing it with others. Best Wishes and fair winds – Alex Schult

I have a 1979 Hunter 27 I have completely restored her I re manned a yanmar 20gmf new North Sailes new standing and running rigging keel bolts do not leak self tailing winches yes she is a production boat but points and sails fine for cruising. Interior completely renovated hmmn no staples! I have seen and been on some so called higher end boats quality and preformence is a matter of opinion you need deep pockets for a custom boat if you have the $$$ go for it for me I’ll stick with my Hunter 27 Aura great boat without breaking the bank!😎

Hey Theodore, I’ve owned a 82 Hunter 27’ for over 20 years. I took a job about 5 years ago that included a lot of international travel and found myself using my boat for doc candy and Christmas decorations at our home doc. So, I’m beginning a complete refrub, which includes a new Yanmar motor (ouch). I’ve got quite a bit of interior and exterior rehab with not a lot of experience. Anyway I could pull on some of your experience?

We purchased a 1979 Hunter 27 in 2020 as an upgrade from our Nordica 16. Our territory (the Baie de Chaleurs) in northern New Brunswick Canada has a reputation for unpredictable winds and weather. I installed wheel steering (an Edson outfit) which greatly improved my enjoyment. However, I still has issued with docking using the low-cockpit controls for the Yanmar diesel. Researching for solutions, I came across the website of “Electric Yacht” out of Minnesota. So, in 2021, I converted the drive to electric. It has taken me two years to sell the Yanmar. The conversion cost me around $15,000 CA including 4 hours for a machinist to align the propeller shaft and electric motor properly (the hardest part). We are more than happy with the results. Docking now is a joy. I even learned to back-in to our berth and my eyes are always on my surroundings. All the controls are on my binacle The 10 KW motor uses four 150 AmpHr lithium iron-phosphate batteries and works flawlessly. We have even crossed the bay to Quebec twice under just power alone. No gas, no fumes, no noise. He are happy saiiers 🙂

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1990 hunter 27 with tiller

• Thread starter dgottfeld
• Start date May 10, 2016
• Tags hunter 27
• Hunter Owner Forums
• Ask A Hunter Owner

We owned a hunter 23 for years and sold it 5 years ago. We are excited to get back to sailing and we are going to go look at a hunter 27 with tiller and outboard tomorrow. Can any of you give me some key things to look at with these boats. I completely overhauled the 23 so I am handy. Thanks  

Ok so no one knows anything I waited a day to respond because I had a 23 as well but moved up to the thirty but there similar your 27 has that nice open stern with ladder and a stepable mast and you say comes with a trailer that's nice but it's still heavy 3/4 truck heavy and deep look for rusty keel the keel needs to be completely stripped every 10 yr or so when extensive rust forms to 're seal using epoxy bottom coat blisters are a prob or can be but the small ones can be left alone and will dry a boat kept on trailer for a long time years and years I'd be worried about hull deformation but great boat the motor 1/3 value if inboard the sails 1/3rd value  

Steve Morris

I've sent you several private messages about this boat. You might want to read those.  

Crazy Dave Condon

If I recall that wing keel mfg. by Mars Metals was solid lead, not cast iron. Not sure about that but adding epoxy barrier coating will not hurt that and then of course anti fouling paint and would suggest checking locally to see what works well. As for the keel bolts, if no water is coming thru, the best way to handle that is to leave it alone,. Even though there is a hinged mast step, there was no supplied nor offered mast raising system for the boat as the mast was too heavy. I use to be a dealer who introduced both versions outboard motor/inboard diesel engine many years ago at Annapolis and sold quite a few as a dealer. Yes I did make a few mast raise systems for boats to include this one but due to the weight plus now being retired, I will not offere any advice on that. As for transport, I had a mfg. build a specific trailer for that boat which I pulled with pickup truck either dooley or standard but with diesel or a heavy duty gas engine.  

Yep, my 1990 Hunter 27-2 has a lead keel. I've only been able to raise and lower my mast with the use of a boom truck. It is too hard to handle if you are trying to manually raise it. I've pulled my boat/trailer with my Ford 150 4X4 with a 5.4 liter V8, but it's a real load to handle.  

Thanks for your help we purchased the 27 with the tiller tonight. How much paint is needed to paint the bottom of the 27? Thanks  

DG You are welcome sir and figure on two gallons of anti fouling paint with two coatings and a third at the water line if memory recalls the many of them thar rascals I painted over the years. Not sure if leaving the boat in the water year round or taking it out during the winter. Send me a personal email by this forum email. As a former dealer who sold a lot of those boats, I recall introducing it. I think I know something.  

Thanks Dave, Another question, the masthead light is out, what type of bulb does it use. Before I send up my kid I need to know what we are replacing and I assume it is a simple screwdriver to open it correct? Thanks  

look at the owners manual and it should state the specific mast light but if you do not have the manual look under above boat information. Phil Herring has gone to great lengths to include those manuals.  

I couldn't find the manual can you forward the link thanks it is a 1990 hunter 27  

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Hunter 27 2

The hunter 27 2 is a 26.58ft fractional sloop designed by hunter design team and built in fiberglass by hunter marine (usa) between 1989 and 1994..

The Hunter 27 2 is a light sailboat which is a reasonably good performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a day-boat. The fuel capacity is originally very small.

Hunter 27 2 for sale elsewhere on the web:

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Hunter 27-2

Hunter 27-2 is a 26 ′ 6 ″ / 8.1 m monohull sailboat designed by Hunter Design Team and built by Hunter Marine between 1989 and 1994.

• 2 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 3 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 4 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 5 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 6 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 7 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 8 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 9 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 10 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 11 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 12 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 13 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 14 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 15 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 16 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 17 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 18 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 19 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 20 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 21 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 22 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 23 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 24 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 25 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 26 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 27 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 28 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 29 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 30 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 31 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 32 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 33 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 34 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 35 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 36 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 37 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 38 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 39 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 40 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 41 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 42 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 43 / 50 Buford, GA, US 1992 Hunter 27-2 $12,500 USD View
• 44 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 45 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 46 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 47 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 48 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 49 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View
• 50 / 50 Rogersville, AL, US 1989 Hunter 27-2 $22,500 USD View

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

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