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HMS Explorer (submarine)
HMS ''Explorer'' was an experimental British submarine based on the captured German high test peroxide (HTP) powered U-boat ''U-1407''. ''U-1407'' had been scuttled following the German collapse at the end of the Second World War, was salvaged and eventually commissioned into the Royal Navy as . Her recovery was the impetus for a British research programme which resulted in the construction of two experimental submarines, HMS ''Explorer'' and . Built for speed trials, they were unarmed. Their HTP engines were essentially steam turbines, with the steam being generated by the interaction of HTP with diesel oil and a catalyst. ''Explorer'' suffered from so many teething troubles that her first captain never took her to sea. When these initial problems were conquered, however, she turned out to be impressively fast, achieving submerged speeds of 25 knots (46.3 km/h), aided by her streamlined hull and retractable fittings. Both ''Explorer'' and her sister ship were fit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Ensign Of The United Kingdom
The White Ensign, at one time called the St George's Ensign due to the simultaneous existence of a cross-less version of the flag, is an ensign worn on British Royal Navy ships and shore establishments. It consists of a red St George's Cross on a white field, identical to the flag of England except with the Union Flag in the upper canton. The White Ensign is also worn by yachts of members of the Royal Yacht Squadron and by ships of Trinity House escorting the reigning monarch. In addition to the United Kingdom, several other nations have variants of the White Ensign with their own national flags in the canton, with the St George's Cross sometimes being replaced by a naval badge omitting the cross altogether. Yachts of the Royal Irish Yacht Club wear a white ensign with an Irish tricolour in the first quadrant and defaced by the crowned harp from the Heraldic Badge of Ireland. The Flag of the British Antarctic Territory and the Commissioners' flag of the Northern Lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-independent Propulsion
Air-independent propulsion (AIP), or air-independent power, is any marine propulsion technology that allows a non-nuclear submarine to operate without access to atmospheric oxygen (by surfacing or using a snorkel). AIP can augment or replace the diesel-electric propulsion system of non-nuclear vessels. Modern non-nuclear submarines are potentially stealthier than nuclear submarines; although some modern submarine reactors are designed to rely on natural circulation, most naval nuclear reactors use pumps to constantly circulate the reactor coolant, generating some amount of detectable noise. Non-nuclear submarines running on battery power or AIP, on the other hand, can be virtually silent. While nuclear-powered designs still dominate in submergence times, speed, range and deep-ocean performance; small, high-tech non-nuclear attack submarines can be highly effective in coastal operations and pose a significant threat to less-stealthy and less-maneuverable nuclear submarines. AIP ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ships Built In Barrow-in-Furness
A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished from boats, based on size, shape, load capacity, and purpose. Ships have supported exploration, trade, warfare, migration, colonization, and science. After the 15th century, new crops that had come from and to the Americas via the European seafarers significantly contributed to world population growth. Ship transport is responsible for the largest portion of world commerce. The word ''ship'' has meant, depending on the era and the context, either just a large vessel or specifically a ship-rigged sailing ship with three or more masts, each of which is square-rigged. As of 2016, there were more than 49,000 merchant ships, totaling almost 1.8 billion dead weight tons. Of these 28% were oil tankers, 43% were bulk carriers, and 13% were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for Nuclear medicine, medical and industrial radiography, industrial use, or for production of weapons-grade plutonium. , the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear research reactors in operation around the world. In the early era of nuclear reactors (1940s), a reactor was known as a nuclear pile or atomic pile (so-called because the graphite moderator blocks of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage (4,635,628 tonnes as of 2019) and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft . The United States Navy traces its origins to the Continental Navy, which was established during the American R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RFA Spabeck (A227)
RFA ''Spabeck'' (A227) was one of six coastal water carriers built for the Royal Fleet Auxiliary during the Second World War. During the 1950s she was modified to store high-test peroxide (HTP) for the experimental programme evaluating the feasibility of submarines using HTP operationally. The ship was sold for scrap in 1966. Description The ''Spa''-class ships were designed for harbour duties as water carriers.Wilson, p. 252 displaced at normal load and fully loaded. The ships had an overall length of , a beam of and a draught of at deep load. They were powered by a three-cylinder vertical triple-expansion steam engine that drove a single propeller shaft, using steam provided by one cylindrical boiler. The engine developed and gave a maximum speed of . The ships were armed with a single 12-pounder () gun and two Oerlikon AA gunsLenton, p. 614 Construction and career ''Spabeck'' ordered in September 1941 from Philip and Son and was laid down on 14 May 1943 at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Fleet Auxiliary
The Royal Fleet Auxiliary (RFA) is a naval auxiliary fleet owned by the UK's Ministry of Defence. It provides logistical and operational support to the Royal Navy and Royal Marines. The RFA ensures the Royal Navy is supplied and supported by providing fuel and stores through replenishment at sea, transporting Royal Marines and British Army personnel, providing medical care and transporting equipment and essentials around the world. In addition the RFA acts independently providing humanitarian aid, counter piracy and counter narcotic patrols together with assisting the Royal Navy in preventing conflict and securing international trade. They are a uniformed civilian branch of the Royal Navy staffed by British merchant sailors. RFA personnel are civilian employees of the Ministry of Defence and members of the Royal Naval Reserve and Sponsored Reserves. Although RFA personnel wear Merchant Navy rank insignia with naval uniforms, they are part of the Royal Navy. RFA vessels a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RFA King Salvor (A291)
RFA ''King Salvor'' (A291), initially HMS ''King Salvor'' (W191), was the lead ship of a class of 12 salvage vessels of the Royal Fleet Auxiliary. A 13th ship was completed as the submarine rescue vessel for the Royal Navy. ''King Salvor'' was built by Wm. Simons & Co. Ltd. of Renfrew as ''Allegiance'', launched on 18 May 1942, and commissioned on 17 July 1942. The ship converted into a submarine rescue bell and target ship, and renamed HMS ''Kingfisher'' in April 1954. Decommissioned in 1960, the ship was sold to the Argentine Navy The Argentine Navy (ARA; es, Armada de la República Argentina). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with t ... in December 1960 and renamed ''Tehuelche'' in 1961, ''Guardiamarina Zicari'' in 1963, and disposed of in 1974. Notes Further reading * External linksKing Salvor class [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depot Ship
A depot ship is an auxiliary ship used as a mobile or fixed base for submarines, destroyers, minesweepers, fast attack craft, landing craft, or other small ships with similarly limited space for maintenance equipment and crew dining, berthing and relaxation. Depot ships may be identified as tenders in American English. Depot ships may be specifically designed for their purpose or be converted from another purpose. Function Depot ships provide services unavailable from local naval base shore facilities. Industrialized countries may build naval bases with extensive workshops, warehouses, barracks, and medical and recreation facilities. Depot ships operating within such bases may provide little more than command staff offices,Lenton (1975) pp.391-394 while depot ships operating at remote bases may perform unusually diverse support functions. Some United States Navy submarine depot ships operating in the Pacific during World War II included sailors with Construction Battalion ratings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3rd Submarine Squadron
Third or 3rd may refer to: Numbers * 3rd, the ordinal form of the cardinal number 3 * , a fraction of one third * 1⁄60 of a ''second'', or 1⁄3600 of a ''minute'' Places * 3rd Street (other) * Third Avenue (other) * Highway 3 Music Music theory *Interval number of three in a musical interval **major third, a third spanning four semitones **minor third, a third encompassing three half steps, or semitones **neutral third, wider than a minor third but narrower than a major third **augmented third, an interval of five semitones **diminished third, produced by narrowing a minor third by a chromatic semitone *Third (chord), chord member a third above the root *Degree (music), three away from tonic **mediant, third degree of the diatonic scale **submediant, sixth degree of the diatonic scale – three steps below the tonic ** chromatic mediant, chromatic relationship by thirds *Ladder of thirds, similar to the circle of fifths Albums *''Third/Sister Lovers'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Hull
A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure hull is the inner hull of a submarine that maintains structural integrity with the difference between outside and inside pressure at depth. Shapes Modern submarines are usually cigar-shaped. This design, already visible on very early submarines, is called a " teardrop hull". It is structurally efficient for withstanding external pressure, and significantly reduces the hydrodynamic drag on the sub when submerged, but decreases the sea-keeping capabilities and increases drag while surfaced. History The concept of an outer hydrodynamically streamlined light hull separated from the inner pressure hull was first introduced in the early pioneering submarine Ictineo I designed by the Spanish inventor Narcís Monturiol in 1859. However, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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