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50N refers to 50 newtons. This is the buoyancy force that the buoyancy aid provides (10N ~= 1kg). This site has some useful information on buoyancy aids and ratings. 50N is the pretty much the sta...
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50N refers to 50 newtons. This is the buoyancy force that the buoyancy aid provides (10N ~= 1kg). This site has some useful information on buoyancy aids and ratings. 50N is the pretty much the sta...