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Escape Trunk
An escape trunk is a small compartment on a submarine which provides a means for crew to escape from a downed submarine; it operates on a principle similar to an airlock, in that it allows the transfer of persons or objects between two areas of different pressure. Principle of operation The water pressure on the outer hatch is always greater than the air pressure inside the submarine, which prevents opening the hatch. Only when the pressure inside the escape chamber is equal to the sea pressure can the hatch be opened. Thus the compartment must be sealed off from the interior of the submarine and the pressure inside the chamber must be raised to sea pressure in order to make it possible to open the escape hatch. Operation #The drain valve is opened to ensure any residual water is drained from the compartment, and the pressure between the interior of the submarine and the escape trunk is equalized. #The drain valve is closed, 6–8 people climb up through the lower hatch into the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Escape Trunk
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, blockade running, nuclear deterrence, reconnaissance, conventional land attack (for example, using a cruise missile), and covert insertion of spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compartment (ship)
A compartment is a portion of the space within a ship defined vertically between decks and horizontally between bulkheads. It is analogous to a room within a building, and may provide watertight subdivision of the ship's hull important in retaining buoyancy if the hull is damaged. Subdivision of a ship's hull into watertight compartments is called compartmentation. History Bulkhead watertight compartments were originally invented by the Chinese. These compartments strengthened the junks and slowed flooding in case of holing during the Han and Song dynasties. The wide application of Chinese watertight compartments soon spread to the Europeans through the Indian and Arab merchants. The economics of early unsinkable passenger ships was scrutinized in an 1882 Scientific American article. Watertight subdivision Watertight subdivision limits loss of buoyancy and freeboard in the event of damage, and may protect vital machinery from flooding. Most ships have some pumping capaci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airlock
An airlock, air-lock or air lock, often abbreviated to just lock, is a compartment with doors which can be sealed against pressure which permits the passage of people and objects between environments of differing pressure or atmospheric composition while minimizing the change of pressure in the adjoining spaces and mixing of environments. The lock consists of a relatively small chamber with two airtight doors in series which do not open simultaneously. An airlock may be used for passage between environments of different gases or different pressures, or both, to minimize pressure loss or prevent the gases from mixing. An airlock may also be used underwater to allow passage between an air environment in a pressure vessel and the water environment outside, in which case the airlock can contain air or water. This is called a floodable airlock or an underwater airlock, and is used to prevent water from entering a submersible vessel or an underwater habitat. Air-locks are used in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steinke Hood
A Steinke hood, named for its inventor, Lieutenant Harris Steinke, is a device designed to aid escape from a sunken submarine. In essence, it is an inflatable life jacket with a hood that completely encloses the wearer's head, trapping a bubble of breathable air. It is designed to assist buoyant ascent. An advancement over its predecessor, the Momsen lung, Steinke first invented and tested it in 1961 by escaping from the USS Balao at a depth of ; it became standard equipment in all submarines of the United States Navy throughout the Cold War period. The U.S. Navy replaced Steinke hoods on U.S. submarines with escape suits called Submarine Escape Immersion Equipment Submarine Escape Immersion Equipment (SEIE), also known as Submarine Escape ''and'' Immersion Equipment, is a whole-body suit and one-man life raft that was first produced in 1952. It was designed by British company RFD Beaufort Limited and allow ... in the late 2000s. See also * * * References * Steinke Hood Fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Escape Immersion Equipment
Submarine Escape Immersion Equipment (SEIE), also known as Submarine Escape ''and'' Immersion Equipment, is a whole-body suit and one-man life raft that was first produced in 1952. It was designed by British company RFD Beaufort Limited and allows submariners to escape from a sunken submarine. The suit also provides protection against hypothermia and (since the Mk 10 version) has replaced the Steinke hood rescue device. The suit allows survivors to escape a disabled submarine at depths down to , with an ascent speed of 2–3 meters/second, at a rate of eight or more sailors per hour. The latest generation RFD Beaufort SEIE MK11 enables free ascent from a stricken submarine and provides extensive protection for the submariner on reaching the surface until rescued. A typical assembly comprises a submarine escape and immersion suit, an inner thermal liner, and a gas-inflated single-seat life raft, all contained in a protective stowage compartment. The intention of the suit is to keep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Submergence Rescue Vehicle
A deep-submergence rescue vehicle (DSRV) is a type of deep-submergence vehicle used for rescue of downed submarines and clandestine missions. While DSRV is the term most often used by the United States Navy, other nations have different designations for their vehicles. List of deep submergence rescue vehicles Australian models ASRV ''Remora'' ("Really Excellent Method Of Rescuing Aussies") was the Australian navy's DSRV. It is based on a diving bell design. Chinese models The People's Republic of China has three Type 925 Dajiang class and three Type 926 class. Each ship is equipped with either two Type 7103 DSRV or one LR7 crewed submersible undersea rescue vehicle. European models France, Norway and the UK share the NATO Submarine Rescue System programme. Italian models Italy operates , equipped with the SRV-300 submersible in a submarine rescue role * The SRV-300, built by Drass-Galeazzi, was delivered in 1999 and can operate up to depth, hosting 12 persons in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Tang (SS-306)
USS ''Tang'' (SS-306) was a ''Balao''-class submarine of World War II, the first ship of the United States Navy to bear the name Tang. She was built and launched in 1943, serving until being sunk by her own torpedo off China in the Taiwan Strait on 24 October 1944. In her short career in the Pacific War, ''Tang'' sank 33 ships totalling 116,454 tons. Commander Richard O'Kane received the Medal of Honor for her last two engagements (23 and 24 October 1944). ''Tang'' was sunk during the last engagement by a circular run of her final torpedo, going down in of water. 78 men were lost, and the five survivors were picked up by a Japanese frigate and taken prisoner of war. This was the only time that a Momsen lung was used to escape a sunken submarine. Construction The contract to build USS ''Tang'' was awarded to Mare Island Naval Shipyard on 15 December 1941, and her keel was laid down on 15 January 1943. She was launched on 17 August sponsored by Mrs. Alix M. Pitre, wife of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Archerfish (SS-311)
USS ''Archerfish'' (SS/AGSS-311) was a ''Balao''-class submarine. She was the first ship of the United States Navy to be named for the archerfish. ''Archerfish'' is best known for sinking the Japanese aircraft carrier ''Shinano'' in November 1944, the largest warship ever sunk by a submarine. For this achievement, she received a Presidential Unit Citation after World War II. Construction and commissioning ''Archerfish''s keel was laid down on 22 January 1943 in the Portsmouth Navy Yard in Kittery, Maine. She was launched on 28 May 1943, sponsored by Miss Malvina Thompson, the personal secretary to first lady Eleanor Roosevelt. The boat was commissioned on 4 September 1943. World War II ''Archerfish'' underwent shakedown training through the first part of November off the New England coast, and headed for Hawaii via the Panama Canal. She arrived at Pearl Harbor on 29 November 1943 and joined the Pacific Fleet. First four patrols, December 1943 – September 1944 Aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BAP Pacocha (SS-48)
BAP ''Pacocha'' (SS-48) was a submarine of the ''Marina de Guerra del Perú'' (Peruvian Navy) named for the 1877 Battle of Pacocha, in which the Peruvian ironclad ''Huascar'' clashed with the Royal Navy. Formerly , a with a GUPPY IA upgrade, she had been sold to Peru and commissioned on 28 May 1974. She was rammed and sunk by a fishing trawler on 26 August 1988. Sinking and rescue operation At 18:50 in the evening of 26 August 1988, ''Pacocha'' was transiting on the surface with the forward torpedo room and bridge hatches as well as the main induction valve open. Forty-nine men were aboard, including the squadron commander, to conduct an operational readiness inspection. About half an hour after sunset, ten minutes from ''Pacochas expected arrival at the port of Callao, the 412-ton Japanese fishing trawler ''Kiowa Maru'' (also spelled ''Kyowa Maru'' and ''Hyowa Maru'') rammed her in the aft port quarter. ''Kiowa Maru'' was equipped with an ice-breaker bow, with a sub-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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