Critical hand signals for air or gas management for beginner scuba divers.

Описание: Continuing our series looking at scuba-diving hand signals, Lyell walks you through two handed and one handed hand signals that can be used underwater to communicate air or gas levels, Also we discuss and ask additional questions like, “When should we use the low on air hand signal?”. In addition, he talks about some of the differences in hand signals when using psi versus bar for pressure measurements!

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