Like your boats gas tank the marine tanks draw from the bottom where the water would be so I would expect the starboard tank to have water if that was the source. BTY no marina I know will confess to selling contaiminated fuel.
What is the condition of the tanks vent? Could water spray be getting in that way?
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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