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Walrus-class Submarine (1953)
The ''Walrus'' class was a class of two submarines that served between 1953 and 1971 in the Royal Netherlands Navy.Raven (1988), p. 179. They were former ''Balao'' class submarines that were loaned to the Netherlands by the United States under the Mutual Defense Assistance Program (MDAP). Background After the Second World War the Royal Netherlands Navy (RNN) was left with several old and obsolete submarines. While the RNN made several plans to modernize the submarine fleet, it took many years till these plans resulted in the construction and commissioning of new submarines.Jalhay (1982), p. 63. In the meanwhile the RNN tried to loan some of the surplus submarines that allies such as the United Kingdom and United States (US) had.de Bles, Boven and Homburg (2006), p. 102. In the early 1950s this led to the US loaning two submarines to the Netherlands under the Mutual Defense Assistance Program (MDAP), which together would later form the ''Walrus'' class.Jalhay (1982), p. 124. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manitowoc Shipbuilding Company
Manitowoc Shipbuilding Company, located in Manitowoc, Wisconsin, was a major shipbuilder for the Great Lakes. It was founded in 1902, with the purchase of the "Burger & Burger Shipyard," a predecessor to The Burger Boat Company, and made mainly steel ferry, ferries and ore haulers. During World War II, it built submarines, Landing Craft Tank, tank landing craft (LCTs), and self-propelled fuel barges called "YOs". Employment peaked during the military years at 7000. The shipyard closed in 1968, when The Manitowoc Company, Manitowoc Company bought Bay Shipbuilding Company and moved their shipbuilding operation to Sturgeon Bay, Wisconsin, Sturgeon Bay. Submarine building program Shipyard President Charles C. West contacted the Bureau of Construction and Repair in 1939 to propose building destroyers at Manitowoc and transporting them through the Chicago River, Chicago Sanitary and Ship Canal, Illinois River, and Mississippi River in a floating drydock towed by the tugboat ''Minnesot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Hawkbill (SS-366)
USS ''Hawkbill'' (SS-366), a ''Balao''-class submarine, was the first ship of the United States Navy to be named for the hawksbill, a large sea turtle (the "-s-" was inadvertently dropped at commissioning.). Construction and commissioning ''Hawkbill'' (SS-366) was launched by the Manitowoc Shipbuilding Company in Manitowoc, Wisconsin, on 9 January 1944, sponsored by Mrs. F. W. Scanland, Jr., and commissioned on 17 May 1944. Operational history Following a period of training on the Great Lakes, ''Hawkbill'' departed 1 June 1944 from Manitowoc to begin the long journey down the Illinois River and finally by barge down the Mississippi. She arrived New Orleans 10 June and, after combat loading, sailed 16 June for training based at the submarine base at Balboa, Panama Canal Zone. On 18 June 1944, the 5,433- gross register ton Panamamanian merchant ship mistook her for a German U-boat and opened gunfire on her in the Caribbean Sea about south of Cape San Antonio, Cuba, at , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Icefish (SS-367)
Icefish may mean: Fish * Channichthyidae, the crocodile icefish or white-blooded fish of the Antarctic region, so-named for their cold habitat and clear (colorless) blood without hemoglobin ** Jonah's icefish (''Neopagetopsis ionah''), of the Southern Ocean * Nototheniidae, the cod icefish or notothens of the Antarctic region, whose members have red, hemoglobin-rich blood ** Patagonian toothfish (''Dissostichus eleginoides''), a species of Notothen found in cold southern waters * Salangidae, the icefish or noodlefish, a family of small, transparent or semi-transparent ("ice-like") fishes found in fresh, brackish and marine waters in East Asia and the northwestern Pacific Ocean Other uses * , a submarine * IceFish (band), a progressive rock project band started by Virgil Donati and Marco Sfogli See also * Ice fishing Ice fishing is the practice of catching fish with lines and fish hooks or spears through an opening in the ice on a frozen body of water. Ice fishers may fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biak
Biak is the main island of Biak Archipelago located in Cenderawasih Bay near the northern coast of Papua (province), Papua, an Indonesian province, and is just northwest of New Guinea. Biak has many atolls, reefs, and corals. The largest population centre is at Kota Biak (Biak City) on the south coast. The rest of the island is thinly populated with small villages. Biak is part of the Biak Islands (''Kepulauan Biak''), and is administered by Biak Numfor Regency. Geography Biak covers an area of The island is long and wide at its widest point. The highest point is approximately 740 meters elevation, located in the northwest of the island. The island of Supiori Island, Supiori lies close to the northwest, separated from Biak by a narrow, shallow channel. The smaller Padaido Islands lie south and southeast of Biak. Collectively Biak, Supiori, the Padaido Islands, and the island of Numfor to the southwest are known as the Schouten Islands, also called the Biak Islands or Geelv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manokwari
Manokwari is a coastal town and the capital city, capital of the Provinces of Indonesia, Indonesian province of West Papua (province), West Papua. It is one of only seven provincial capitals of Indonesia without a city status in Indonesia, city status. It is also the regency seat, administrative seat of Manokwari Regency. However, under proposals currently under consideration by the Indonesian Parliament, it is planned to split Manokwari town off from the regency and turn it into a separate city. The majority of Manokwari residents are Christians and the town is one of the seats of the Roman Catholic Diocese of Manokwari–Sorong. History Trade between the natives of the region and Southeast Asians probably began around the 15th century or even earlier. Possibly via Maluku Islands, Moluccan and Malays (ethnic group), Malay influence, some local chiefs of the town had adopted Islam by the 19th century.Slama, Martin (2015),Papua as an Islamic Frontier: Preaching in 'the Jungle' an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch New Guinea
Dutch New Guinea or Netherlands New Guinea (, ) was the western half of the island of New Guinea that was a part of the Dutch East Indies until 1949, later an overseas territory of the Kingdom of the Netherlands from 1949 to 1962. It contained what are now Indonesia's six easternmost provinces, Central Papua, Highland Papua, Papua, South Papua, Southwest Papua, and West Papua, which were administered as a single province prior to 2003 under the name ''Irian Jaya'', and now comprise the Papua region of the country. During the Indonesian Revolution, the Dutch launched to capture territory from the Indonesian Republic. However, the harsh methods of the Dutch had drawn international disapproval. With international opinion shifting towards support of the Indonesian Republic, the Dutch managed in 1949 to negotiate for the separation of Dutch New Guinea from the broader Indonesian settlement, with the fate of the disputed territory to be decided by the close of 1950. However, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampere-hour
An ampere-hour or amp-hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour (3,600 seconds), thus equal to 3600 A⋅s or Coulomb. The commonly seen milliampere-hour (symbol: mA⋅h, mA h, often simplified as mAh) is one-thousandth of an ampere-hour (3.6 coulombs). Use The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and for battery capacity where the commonly known nominal voltage is understood. A ''milliampere second'' (mA⋅s) is a unit of measurement used in X-ray imaging, diagnostic imaging, and radiation therapy. It is equivalent to a ''millicoulomb''. This quantity is proportional to the total X-ray energy produced by a given X-ray tube operated at a particular voltage. The same total dose can be delivered in different time periods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knot (unit)
The knot () is a unit of speed equal to one nautical mile per hour, exactly (approximately or ). The ISO standard symbol for the knot is kn. The same symbol is preferred by the Institute of Electrical and Electronics Engineers ( IEEE), while kt is also common, especially in aviation, where it is the form recommended by the International Civil Aviation Organization ( ICAO). The knot is a non- SI unit. The knot is used in meteorology, and in maritime and air navigation. A vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour. Definitions ;1 international knot = :1 nautical mile per hour (by definition), : (exactly), : (approximately), : (approximately), : (approximately) : (approximately). The length of the internationally agreed nautical mile is . The US adopted the international definition in 1954, having previously used the US nautical mile (). The UK adopted the international nautical mile defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the imperial horsepower as in "hp" or "bhp" which is about , and the metric horsepower as in "cv" or "PS" which is approximately . The electric horsepower "hpE" is exactly , while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other power-generating machinery such as piston engines, turbines, and electric motors. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-stroke Engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle. During the stroke from bottom dead center to top dead center, the end of the exhaust/intake (or Scavenging (automotive), scavenging) is completed along with the compression of the mixture. The second stroke encompasses the combustion of the mixture, the expansion of the burnt mixture and, near bottom dead center, the beginning of the scavenging flows. Two-stroke engines often have a higher power-to-weight ratio than a four-stroke engine, since their power stroke occurs twice as often. Two-stroke engines can also have fewer moving parts, and thus be cheaper to manufacture and weigh less. In countries and regions with stringe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder (engine)
In an engine, the cylinder is the space in which a piston travels. The inner surface of the cylinder is formed from either a thin metallic liner (also called "sleeve") or a surface coating applied to the engine block. A piston is seated inside each cylinder by several metal piston rings, which also provide seals for compression and the lubricating oil. The piston rings do not actually touch the cylinder walls, instead they ride on a thin layer of lubricating oil. Steam engines The cylinder in a steam engine is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were cast in cast iron and later in steel. The cylinder casting can include other features such as valve ports and mounting feet. Internal combustion engines The cylinder is the space through which the piston travels, propelled by the energy generated from the combustion of the air/fuel mixture in the combustion chamber. In an air-cooled e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
