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Old 05-18-18, 07:49 PM   #13
dietrickvonfikt
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https://en.wikipedia.org/wiki/Submarine_snorkel

From June 1943 U-boats had orders to cross the Bay of Biscay almost completely submerged to avoid air attack. The U-boats were to come to the surface only once at night, for long enough to recharge their batteries (2-4 hours). NOT to recharge their air – I checked this with real U-boat survivors. Thus the U-boats were cruising underwater for up to 22 hours without replenishing their air.

that is why they could cross the Bay of Biscay snorkel was able to give fresh air to the crew and was not designed only for alowing the diesel engines to run underwater for 22 hours

and in 1943 obviously the german submarines have been equiped with snorkel

Last edited by dietrickvonfikt; 05-18-18 at 07:57 PM.
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