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The criteria, which are used in this review, are the boat categories from EU (European Union), ISO standards, boat design ratios like 'Motion Comfort Ratio', 'Theoretical Max Hull Speed', handicap, and many others.

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YLVA Passenger Ship, IMO 8904305

Where is the current position of ylva presently vessel ylva is a passenger ship sailing under the flag of sweden . her imo number is 8904305 and mmsi number is 265547230. main ship particulars are length of 34 m and beam of 8 m. maps show the following voyage data - present location, next port, estimated (eta) and predicted time of arrival (pta), speed, course, draught, photos, videos, local time, utc time..

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The Hylas 44 is a 44.17ft masthead sloop designed by German Frers and built in fiberglass by Queen Long Marine between 1984 and 1993.

The Hylas 44 is a moderate weight sailboat which is a reasonably good performer. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser.

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Hylas 44 is a 44 ′ 1 ″ / 13.5 m monohull sailboat designed by German Frers and built by Hylas Yachts USA and Queen Long Marine between 1984 and 1993.

Drawing of Hylas 44

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)

From BlueWaterBoats.org :

The Hylas 44 from designer German Frers is a center cockpit offshore cruiser known for her good looks and build quality from Queen Long Marine of Taiwan. Introduced in 1984 production spanned eight years before ending in 1992. These days Hylas 44s are particularly popular for their accommodation layout, her idiosyncratic hull shape carries her maximum beam far aft allowing for a wide aft stateroom. You can find them on the market today with variations in the keel configuration (deep or shoal) as well as their rigs with both cutter and sloops being offered.

Queen Long Marine commissioned German Frers to design two cruising sailboats in the early 1980’s. These became the racy Hylas 42 and the more “cruiserly” Hylas 44 in 1984 which now are part of a well known Hylas series of yachts.

The Hylas 44 in particular became popular among charter boat circles in the Caribbean with Bill Stevens of Stevens Charters and then Dick Jachney of Caribbean Yacht Charters (CYC) purchasing most of the boats. Private dealers throughout the world also sold these Hylas yachts. In 1990, CYC became the sole importation agent for new Hylas yachts. By 1992, CYC had Queen Long add a sugar scoop stern to the 44. In 1995, they introduced a wholly new German Frers designed 46 footer with a different cabin trunk, deeper forefoot, and fully integrated swim platform. These 46 Hylas yachts are currently in production as of 2010.

The accommodations are the most attractive feature. All 44’s have a offset berth forward and settee with a private head and shower. The main salon includes a dinette arrangement to port and a starboard settee. Leading to the master stateroom are dual walk-throughs, a tremendously popular feature. Along the port side is the master head and shower while the galley is along the opposite side. The master stateroom has a centerline queen on all except the first thirteen hulls which had a berth offset starboard side.


The hull is solid hand laid up fiberglass by Queen Long Shipyards, the Taiwanese builder. The construction includes an impressive stiffening network of full length fore and aft stringers and transverse floors. The deck is balsa or Airex cored and fastened to the hull via stainless bolts and 5200. Chainplates are massive and tie into glassed over stainless steel I-beams. Queen Long was already well known for their Kelly Petersons and Stevens 47’s before producing the 44.

The Hylas 44 is a wet boat. Offshore, a steady stream of water slides over the fine bow and back to center cockpit because of the low freeboard. You often see complete enclosures. She never pounds but slices through waves. Downwind with her sexy beam at 3.8 ratio, she surfs down waves.

Buyers Notes

Many Hylas 44s underwent the hard life of a Caribbean bareboat charter. Caribbean Yacht Charters ran a purchase and charter operation out of the British Virgin Islands. The owner saved on the purchase of a new Hylas 44 from Queen Long but leased the yacht into charter for four years. It is difficult to tell between non-chartered and chartered 44s. Tell tale signs are high engine hours, eyebrows along the cabintrunk, and a Hylas logo in the cockpit. Late in production in 1992, Queen Long decided to extend the 44 with a swim platform into the 45.5. This 45.5 has a different deck mold. Subsequently, owners retrofitted 44s with swim platforms. These aftermarket 45.5s often have unique issues.

As of 2010 the asking prices are in the approximate range of: Hylas 44, 1984-1986 $100k-$150k USD (have smaller cockpits and offset aft berths) Hylas 44, 1986-1992 $150k-$175k USD Hylas 45.5, 1989-1992 $175k-$200k USD (aftermarket swim platform) Hylas 45.5, 1992-1994 $200k-$250k USD (new deck mold, factory swim platform)

Links, References and Further Reading

» Sailing Magazine, Hylas 44 by John Kretschmer » Waves, Hylas 44: Essence of Hylas Yachts » Hylas Yachts USA, company website

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On the diversity of fishes in mountain lakes of the Amur basin

  • Published: 23 December 2017
  • Volume 57 , pages 860–869, ( 2017 )

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  • A. L. Antonov 1  

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Results of the study of 11 lakes situated in the mountainous part of the Amur River basin are reported. Six fish species, namely, blunt-snouted lenok Brachymystax tumensis , Baikal-Lena grayling Thymallus baicalolenensis , Siberian stone loach Barbatula toni , Lagowski’s minnow Rhynchocypris lagowskii , Czekanowski’s minnow Rh. czekanowskii , and Amur sculpin Cottus szanaga , were found in five lakes. Four species were found in one lake (Lake Pereval’noe, basin of the Amgun’ River), and two species were found in each of the remaining lakes. Lenok and Amur sculpin were the most common species. The fauna of Lake Okonon (basin of the river Zeya) was the most specific and did not have analogs among the lake faunas; Czekanowski’s minnow and Baikal black grayling were found in this lake. The lenok ecotype that formed in the mountain lakes differed from the river lenok in some regards. The potential pathways of formation and protection of mountain lake ichthyocenoses of the Amur basin are discussed.

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Data on the fish species composition in Nyukzha River (Olekma Tributary) and its basin

D. D. Zworykin

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Structure of Aquatic Communities in Mountain Lakes of the Torgovaya River Basin (Subpolar Ural)

V. I. Ponomarev, O. A. Loskutova & O. N. Kononova

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The Fish of the Plitvice Lakes—A Wealth of Simplicity

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Original Russian Text © A.L. Antonov, 2017, published in Voprosy Ikhtiologii, 2017, Vol. 57, No. 6, pp. 689–697.

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Antonov, A.L. On the diversity of fishes in mountain lakes of the Amur basin. J. Ichthyol. 57 , 860–869 (2017). https://doi.org/10.1134/S0032945217060017

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Received : 11 February 2016

Published : 23 December 2017

Issue Date : November 2017

DOI : https://doi.org/10.1134/S0032945217060017

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  • Feeder's Hand and Key drop from Ylva .
  • Seal Breaker Key drop from Feeder's Hand and Key .

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Khabarovsk: Keystone of the Russian Far East

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Photographs by William Brumfield

By rail, the city of Khabarovsk in the Russian Far East is a six-day, 5,300 mile journey from Moscow. Given the distance, it’s unsurprising that most visitors prefer to make the trip by air. The nine-hour flight has the added advantage of giving travelers a dramatic overview of the Amur River on the approach.  

Indeed, Khabarovsk is a city of two great strategic rivers: the Amur, which flows eastward along the border with China; and the Ussuri, which flows northward some 560 miles from its origins in the southern Sikhote-Alin Mountains, not far from the Sea of Japan. The confluence of these two rivers near Khabarovsk, and the state boundaries they define have created one of the most important geopolitical zones in northern Asia.   

Russian explorers attempted to gain control of the north bank of the Amur as early as the 1640s, but Russia was compelled to abandon the area by the Treaty of Nerchinsk, signed in 1689.  Russian troops did not return to the region in substantial numbers until the mid-19 th century, under the leadership of Governor-General Nikolai Muravyov.

He was later given the title “Amursky” for his role in acquiring the territory for the Russian empire. In the Treaty of Aigun (1858), negotiated with the Qing Dynasty, China ceded to Russia territory north of the Amur and east of the Ussuri.

Khabarovsk arose as a consequence of the Treaty of Aigun. The first Russian settlement was established in May 1858 by a detachment of Siberian troops under the command of Captain Yakov Dyachenko. The post was initially named Khabarovka in homage to the renowned 17th-century Cossack leader Yerofei Khabarov, who explored the area.

The settlement rapidly expanded, and by 1864 it already had a formal plan for development on hilly terrain along the left bank of the Amur. A telegraph line to Vladivostok began operating in 1868, and a proper river port was completed in 1874. By the end of 1880, Khabarovsk had gained over 4,000 inhabitants and an official status as a town.  

How to get there

To get to Khabarovsk from Moscow of St. Petersburg take a regular flight. The trip takes approximately 7,5 hours.

Entrepreneurs looking to capitalize on the development of river trading routes were quick to settle in the young town, which offered considerable potential for commerce with China. Progress in transportation also led to increased government authority. In 1884, Khabarovsk became the administrative center of a vast area stretching from the Amur River to the Pacific.  

The town’s status was further enhanced in late May 1891 when the heir to the throne, Tsarevich Nicholas Alexandrovich (subsequently Nicholas II) included Khabarovka on the itinerary of his nine-month-long world tour.

At the time of his visit, the town unveiled a heroic monument to Muravyov-Amursky by the noted sculptor Alexander Opekushin. Dismantled during the Soviet period, the monument has since been restored to a prominent position overlooking the river. In 1893, the town’s name was changed from Khabarovka to the more formal Khabarovsk.

Perhaps the greatest catalyst for the town’s early growth was the completion of a rail line from Vladivostok in 1897. Khabarovsk now had a direct link to a growing international port, even as it controlled interior river traffic over the extensive territory of the Amur River basin.  

The town’s strategic location was not lost on military planners, who developed local machine factories to equip the armed forces of the Far East. At the same time, Khabarovsk, like the rest of Russia, experienced severe labor and military unrest in 1905-06 following the country’s defeat in the Russo-Japanese War.

Special Project: Discovering Russia

With the return to stability under Prime Minister Pyotr Stolypin (1862-1911), Khabarovsk continued its rapid growth. During the three decades from 1884 to the beginning of World War I, the population increased more than 10-fold. And in 1908, Khabarovsk became the headquarters of the Amur River Flotilla, with responsibility for patrolling the long frontier with Manchuria.  

In 1914, connections were improved with the Trans-Siberian Railway, which gave Khabarovsk access to distant Moscow and St. Petersburg. At that time, however, the rail route to the Russian Far East still went through Manchuria along the Chinese Eastern Railway.

The town was linked directly to eastern Siberia only in 1916, with the completion of a bridge across the Amur just to the northwest of Khabarovsk. Built in difficult conditions within three years, the bridge was one of the major achievements of Russian engineering.  

To this day the attractive, often imposing architecture of central Khabarovsk reflects the prosperity of the town at the turn of the 20 th century. Using an eclectic mixture of neoclassicism and medieval Russian elements, architects designed enduring, well-built structures for housing, commerce and administration. A peculiar local feature was the use of high quality, unstuccoed red brick for the structure, with gray brick for decorative trim.  

The most visible indicator of prosperity and rising consumer demand was the large department store. Firms such as Kunst and Albers, which had stores in several towns, and the Pyankov Brothers used architecture to create an impressive display for retail trade. The large Plyusnin building, subsequently converted to the Regional Library, contained one of the town’s many banks. The best of these buildings are on the main street, which is named after Muravyov-Amursky.  

Other historic buildings display the style moderne that was fashionable at the beginning of the 20 th century, with traces of traditional Russian decoration. The best example is the former building of the city council, now carefully restored.  

 The Shrines of Kargopol: Preserving the art of the Russian North

The Shrines of Kargopol: Preserving the art of the Russian North

The devastation of World War I occurred far from Khabarovsk, and the city actually grew with expanding military production. But the civil war following the Bolshevik Revolution caused major damage and disruption.

The last major battles of the Civil War occurred near Khabarovsk. Red partisan forces recaptured the town in early 1920, but they were suddenly attacked by the Japanese in April. Fierce fighting led to significant destruction in the central district. Instability continued until December 1921, when the city was retaken by a White army led by Viktorin Molchanov.

At the battle of Volochaevka in February 1922, Molchanov’s defenses were breached and Khabarovsk was retaken by Red forces, but not without further damage to the area, including partial demolition of the magnificent Amur River Bridge. Authority was vested in the Far Eastern Republic, a Communist ally that formally merged with the new Soviet state in November 1922.  

During the Soviet period, the expansion of Khabarovsk accelerated thanks to its strategic military, industrial and administrative position. The pace of growth is reflected in modernist buildings designed by prominent Constructivist architects such as Ilya Golosov, who built the large complex for the House of Soviets in 1929-30.

In the 1930s the Gulag concentration camp empire expanded and prison labor was used in construction. A number of building projects in Khabarovsk were undertaken by the NKVD, which preferred a pompous neoclassical style. Relics of that time include the GlavDalStroi Building and the Commune House, all on Muravyov-Amursky Street.

World War II, like the first, occurred far from Khabarovsk, but the city played a major role in defending the Far East from a Japanese attack. And it served as headquarters during the brief Soviet-Japanese War in August 1945

 Liavlia and Zaostrovye: Enduring traditions in the Arkhangelsk Region

Liavlia and Zaostrovye: Enduring traditions in the Arkhangelsk Region

Greatly expanded after the war, Khabarovsk maintained its momentum into the post-Soviet period. The city’s vitality is reflected in the improved appearance of Muravyov-Amursky Street, from a renovated Lenin Square to Cathedral Square, with its new Dormition Cathedral visible from the Amur. In 2004 the Transfiguration Cathedral was consecrated on Glory Square near the river.

With a population of just over 600,000, Khabarovsk has witnessed a building spree of contemporary apartment houses in colorful post-modernist forms. And the city’s good management was acknowledged in 2000 when it was chosen as the headquarters of the Far Eastern Federal District.

In the late summer of 2013 the Khabarovsk area experienced a record-setting flood of the Amur, but the main part of the city — on high ground — avoided the worst of the destruction. Among the city's promising economic developments is its pivotal role in the massive "Strength of Siberia" gas pipeline project, which will link the gas fields of Yakutia to the rapidly expanding Chinese market. With its well-maintained central district, Khabarovsk preserves its heritage as it looks to the future.

All rights reserved by Rossiyskaya Gazeta.

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  21. About

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