Steve Millard <ec96@li*.ac*.uk*> wrote on Mon, 7 Nov 1994 12:23:06 GMT (Subject: Re: tech report prism):- > ... inadvertant exhalation through the nose. Some divers do this all the time without realising it (as well as doing it to clear water from the mask). I know I often do this to remove water continually leaking pass my moustache into the mask. Your endurance time on any rebreather will go down RADIDLY if you do this using a rebreather. Then shave your moustache off. Moustaches and eyes-and-nose masks don't get on well together. Or use a fullface mask.
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