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A comment on Tiny bubbles under a ship may help reduce fuel consumption.

Re:Tiny bubbles under a ship may help reduce fuel consumption by totierne2 on Saturday November 14, 2020 @03:41PM (#25095451)
Tiny bubbles on the propellor? (Rather than the whole hull.)
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Re:Tiny bubbles under a ship may help reduce fuel consumption by ergwwrt on Saturday November 14, 2020 @06:11PM (#25096558)
Propeller Cavitation. Friction reduction saves money on the glide not the drive
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