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decompression tables 136179
selfcontained and armoured diving apparatus 204213B
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60 feet absorbent Admiralty air pressure air supply air-lock air-pipe ascent atmospheres bottom breast-rope breathing apparatus breathing oxygen bubbles canister carbon dioxide carried cartridges cent Chapter charge CN CN compartment compressed air compressed air illness compressors connected corselet cubic feet cylinders decompression chamber decompression stops DECOMPRESSION TABLES deep diving designed detonators diameter diver diving apparatus diving bell diving dress diving pump door drill equipment escape apparatus explosive fathoms fitted frogman gauge Gorman & Co.'s helium helmet high pressure holes Human Torpedo injector inside J. B. S. Haldane lamp lower lungs mins minutes mixture nitrogen noseclip operations outlet valve oxy-helium oxygen breathing oxygen poisoning pipe plate pulls mean pump pure oxygen reducing valve Royal Navy rubber salvage screwed self-contained ship shot rope Siebe square inch steel stop submarine Submersible Decompression suit surface tank telephone tube underwater cutting vessel weight wire wreck