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Momsen Lung
The Momsen lung was a primitive underwater rebreather used before and during World War II by American submariners as emergency escape gear. It was invented by Charles Momsen (nicknamed "Swede"). Submariners trained with this apparatus in an deep Escape Training Tank at New London, Mare Island, or Pearl Harbor. It was introduced as standard equipment on ''Porpoise'' (P)-class and ''Salmon''-class boats. The device recycled the breathing gas by using a counterlung containing soda lime to remove the carbon dioxide. The lung was initially filled with oxygen and connected to a mouthpiece by twin hoses containing one-way valves, one for breathing in and the other for breathing out. The only known emergency use of the Momsen lung was during the escape from on October 25, 1944. Thirteen men (of thirty survivors) left the forward escape trunk: five were picked up by the Japanese; three more reached the surface "but were unable to hang on or breathe and floated off and drowned"; the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Momsen Lung
The Momsen lung was a primitive underwater rebreather used before and during World War II by American submariners as emergency escape gear. It was invented by Charles Momsen (nicknamed "Swede"). Submariners trained with this apparatus in an deep Escape Training Tank at New London, Mare Island, or Pearl Harbor. It was introduced as standard equipment on ''Porpoise'' (P)-class and ''Salmon''-class boats. The device recycled the breathing gas by using a counterlung containing soda lime to remove the carbon dioxide. The lung was initially filled with oxygen and connected to a mouthpiece by twin hoses containing one-way valves, one for breathing in and the other for breathing out. The only known emergency use of the Momsen lung was during the escape from on October 25, 1944. Thirteen men (of thirty survivors) left the forward escape trunk: five were picked up by the Japanese; three more reached the surface "but were unable to hang on or breathe and floated off and drowned"; the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rebreather
A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's breathing, exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance of a limited gas supply, and, for covert military use by frogmen or observation of underwater life, eliminating the bubbles produced by an open circuit system and in turn not scaring wildlife being filmed. A rebreather is generally understood to be a portable unit carried by the user. The same technology on a vehicle or non-mobile installation is more likely to be referred to as a life-support system. Rebreather technology may be used where breathing gas supply is limited, such as underwater or in space, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rebreathers
A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance of a limited gas supply, and, for covert military use by frogmen or observation of underwater life, eliminating the bubbles produced by an open circuit system and in turn not scaring wildlife being filmed. A rebreather is generally understood to be a portable unit carried by the user. The same technology on a vehicle or non-mobile installation is more likely to be referred to as a life-support system. Rebreather technology may be used where breathing gas supply is limited, such as underwater or in space, where the envir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blow And Go
An emergency ascent is an ascent to the surface by a diver in an emergency. More specifically, it refers to any of several procedures for reaching the surface in the event of an out-of-air emergency, generally while scuba diving. Emergency ascents may be broadly categorised as independent ascents, where the diver is alone and manages the ascent by him/herself, and dependent ascents, where the diver is assisted by another diver, who generally provides breathing gas, but may also provide transportation or other assistance. The extreme case of a dependent ascent is underwater rescue or recovery of an unconscious or unresponsive diver, but this is more usually referred to as diver rescue, and emergency ascent is usually used for cases where the distressed diver is at least partially able to contribute to the management of the ascent. An emergency ascent usually implies that the diver initiated the ascent voluntarily, and made the choice of the procedure. Ascents that are involunt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davis Submerged Escape Apparatus
The Davis Submerged Escape Apparatus (also referred to as DSEA), was an early type of oxygen rebreather invented in 1910 by Sir Robert Davis, head of Siebe Gorman and Co. Ltd., inspired by the earlier Fleuss system, and adopted by the Royal Navy after further development by Davis in 1927. While intended primarily as an emergency escape apparatus for submarine crews, it was soon also used for diving, being a handy shallow water diving apparatus with a thirty-minute endurance, and as an industrial breathing set. Design The DSEA rig chiefly addressed the problem of anoxia threatening a person ascending through water, by providing oxygen; and the associated risk of lung over-pressure injury as underwater pressure reduces with reducing depth, which it addressed by managing oxygen pressures. It also provided assistance with buoyancy, both in the ascent and after reaching the surface. The risk of decompression illness due to ascending too fast could be addressed by associated e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...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] |
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] |
Carbon Dioxide
Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.04% by volume (as of May 2022), having risen from pre-industrial levels of 280 ppm. Burning fossil fuels is the primary cause of these increased CO2 concentrations and also the primary cause of climate change.IPCC (2022Summary for policy makersiClimate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA Carbon dioxide is soluble in water and is found in groundwater, lakes, ice caps, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soda Lime
Soda lime is a mixture of NaOH and CaO chemicals, used in granular form in closed breathing environments, such as general anaesthesia, submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent CO2 retention and carbon dioxide poisoning. It is made by treating slaked lime with concentrated sodium hydroxide solution. Chemical components The main components of soda lime are * Calcium oxide, CaO (about 75%) * Water, H2O (about 20%) * Sodium hydroxide, NaOH (about 3%) * Potassium hydroxide, KOH (about 0.1%). Anaesthetic use During the administration of general anaesthesia, the gases expired by a patient, which contain carbon dioxide, are passed through an anaesthetic machine breathing circuit filled with soda lime granules. Medical-grade soda lime includes an indicating dye that changes color when the soda lime reaches its carbon dioxide absorbing capacity. To ensure that a soda lime canister (CO2 absorber) is functioning properly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmon Class Submarine
The United States Navy ''Salmon''-class submarines were an important developmental step in the design of the "fleet submarine" concept during the 1930s. An incremental improvement over the previous ''Porpoise'' class, they were the first US submarine class to achieve 21 knots with a reliable propulsion plant, allowing them to operate with the Standard-type battleships of the surface fleet. Also, their unrefueled range would allow them to operate in Japanese home waters. These rugged and dependable boats provided yeoman service during World War II, along with their immediate successors, the similar .''A Visual Guide to the U.S. Fleet Submarines Part Two: Salmon & Sargo Classes 1936-1945'' Johnston, David (2010) Navsource Naval History website In some re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Momsen Lungs , another surname
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Momsen may refer to: * Charles Momsen (1896–1967), American pioneer in submarine rescue for the United States Navy *Richard Paul Momsen (1891–1965), American/Brazilian lawyer, US Consul General in Rio de Janeiro *Taylor Momsen (born 1993), American actress, musician and model *Tony Momsen (1928–1994), American football center in the National Football League See also *Momsen lung, primitive underwater rebreather used before and during World War II by American submariners as emergency escape gear *, an Arleigh Burke-class destroyer in the United States Navy * Mom Song (other) * Mommsen *Monson (surname) Monson is a surname. Notable people with the surname include: * Ander Monson, American novelist, poet, and nonfiction writer *Dan Monson (born 1961), American college basketball head coach; son of Don Monson *David Smith Monson (born 1945), U.S. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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