Cheap And Nasty Snorkel extension
Jim Richardson wrote:
2) The pressure at say, 7 feet depth, is about 1.5 atmospheres,
The pressure at say, 7 feet depth, (in seawater) is about 3 psig. It
would take another 9 feet to reach 1.5 ats.
Seawater pressure increases at around .445 psig per foot.
Rick
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