snorkel depth
51USS Guavina (SS-362) — USS Guavina (SS/SSO/AGSS/AOSS 362), a Gato class submarine, was a ship of the United States Navy named for the guavina, a fish which may reach a length of convert|2|ft|m|1 indigenous to the West Indies and the Atlantic coasts of Central America… …
52Deep water blackout — Latent hypoxia hits on ascent A deep water blackout is a loss of consciousness caused by cerebral hypoxia on ascending from a deep freedive or breath hold dive, typically of ten metres or more when the swimmer does not necessarily experience an… …
53Downrigger — A downrigger is a device used while fishing using the trolling method, which places a lure at the desired depth. A downrigger consists of a three to six foot horizontal pole which supports a cannonball (large weight) by a steel cable (generally… …
54USS Bostwick (DE-103) — Career (United States) Name: USS Bostwick (DE 103) …
55Diver training — is the process of developing skills and building experience in the use of diving equipment and techniques so that the diver is able to dive safely and have fun. Not only is the underwater environment hazardous but diving equipment can be… …
56Professional diving — Hardhat diving redirects here. Often, hardhat diving is used to specifically mean diving in the old type Standard diving dress. A US Navy diver at work. The umbilical supplying air from the surface is clearly visible Professional diving is a type …
57USS Mosley (DE-321) — Career (US) Namesak …
58Military engineering vehicle — The EBG combat engineering vehicle, based on the AMX 30 tank, is used by the engineers of the French Army for a variety of missions …
59USS Natchez (PF-2) — For other ships of the same name, see USS Natchez. Career (United States) …
60Karl Dönitz — Großadmiral Karl Dönitz, later Reichspräsident of Germany President of Germany In office 30 April 1945 – 23 May 1945 Chance …
