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The dry chemical hose, much like the front handline, had an electric rewind system activated with a button mounted above the reel. The PKP canister was a large, upright tank with two hoses attached to a valve on top of the canister. One hose carried an inflow of pressurized nitrogen, and the other was an output to the 100-foot hose reel. [3]
US Navy diver dredging an excavation site during an underwater recovery operation, searching for personnel who went missing during WWII off the coast of Koror. Salvage diving is the diving work associated with the recovery of all or part of ships, their cargoes, aircraft, and other vehicles and structures which have sunk or fallen into water.
The method is simple – the new umbilical is secured to the diver's harness, the diver goes onto bailout, the gas supply on the original umbilical is shut down, and the umbilical connections are disconnected using the appropriate spanners (wrenches). The replacement gas supply hose is blown through to clear it of water, and fitted to the helmet.
A dry deck shelter (DDS) is a removable module that can be attached to a submarine to allow divers easy exit and entrance while the boat is submerged. The host submarine must be specially modified to accommodate the DDS, with the appropriate mating hatch configuration, electrical connections, and piping for ventilation, [ 1 ] divers' air, and ...
The bell is a cylindrical or spherical pressure vessel with a hatch at the bottom, and may mate with the surface transfer chamber at the bottom hatch or at a side door. Bells are usually designed to carry two or three divers, one of whom, the bellman, stays inside the bell at the bottom and is stand-by diver to the working divers. Each diver is ...
A diving bell is a rigid chamber used to transport divers from the surface to depth and back in open water, usually for the purpose of performing underwater work. The most common types are the open-bottomed wet bell and the closed bell, which can maintain an internal pressure greater than the external ambient. [1]
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