Pounds Per Square Inch.. (PSI) is the same in any medium, whether it be Fresh water..Sea water, Air, Oil, or Outer space. There is no difference. Psi IS Psi..Period.
There is no water in the speedo tube to the dashboard. It's air. Air is the barrier between the water at the Pito Tube and the speedo at the dashboard. They both combine to produce the same PSI. Just sayin. DJ
Avatar: RELIANCE (1903) The Largest single masted sailing yacht ever built (Until 2004)...with over 16,000 square feet of sail. Successful Americas Cup Defender.
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1986 Minx. SBC 350/260hp, Alpha I. Red, Honey.