so even WWII sub was not a real submersible craft in the sense that they need to have a forward motion in order to maintain depth?
When I see Das boot or U-571 I think I saw them at 0 knots at periscope depth in those movies.
Ouch linerkiller got me first...
So the pump must work in order to maintain depth? So in theory in silent running wheere the pumps are being turned off the boat would keep on sinking with no forward motion.
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