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Antarctic Diving 16 - Struggling Ashore

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Struggling out of the water at the end of a dive. This diving was in the days before all-in-one BCD's that are put on like jackets, instead a separate ABLJ (Adjustable buoyancy Life Jackets) were worn with separate back-packs to hold the bottle, ABLJ,s had a small air bottle separate from the main air supply and could be breathed from in an emergency

You may also notice that the demand valve is twin hose and not single hose (octopus rigs were still extreme exotica, not to become the norm for a good many years). Twin hose rigs had the advantage of being far less prone to icing up in extreme cold conditions and so were used pretty much exclusively in the winter and certainly on under-ice dives. Single hose valves had a tendency to ice-up and free-flow when it got very cold, they could be used without problem in the summer months when sea temperatures rose to maybe +1 or +2C, from the -2C of winter, but the small difference was enough. These days, the technology has progressed and low temperature single hoses are far more reliable.

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