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Submarine deck weapons


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Hi, I'm a U-boat enthusiast (no expert) but I don't think they brought the AA guns inside when submerged. The boats were rarely submerged compared to the time they spent surfaced, so the guns were regularly serviced and oiled and didn't require waterproofing.


The breeches of the deck guns were gastight and therefore watertight, so only the muzzles were plugged with tompions when not in use. Fragile accessories like the gunsights were kept below unless needed. From early 1943 through to mid-1944 most boats were having their deck guns removed as they were increasingly unlikely to be used.

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