For these, the torpedoes would be loaded backwards into the forward torpedo room and carried to the aft tubes.Īll type VII (except VIIA of course) and IX U-Boats had aft torpedo loading hatch.
The VIIC/41 plan I looked at doesn't seem to have one. Roches wrote:Submarines that had stern tubes did not always have a second hatch. It's from someone's visit to the U-505 in Chicago, but it shows clips from a German film of torpedoes being loaded on a U-boat. Type VIIB and later had two external torpedoes and Type IX had 10 external torpedoes in 5 compartments, 3 aft and 2 forward. That's 3,390 lbs the American Mark 14 submarine torpedo was 1,490 kg or 3,280 lbs. For these, the torpedoes would be loaded backwards into the forward torpedo room and carried to the aft tubes.Ī G7a torpedo was 7.163 m long, 533 mm in diameter and weighed 1,538 kg (from de.). Submarines that had stern tubes did not always have a second hatch. It's easy to identify torpedo hatches on a plan because they are angled. There were round hatches in the deck, usually angled at about 45 degrees, through which torpedoes were loaded into the sub. Loading torpedoes into a U-boat was done by the same process used on any other submarine.
That part of the sub is out of the water when it's surfaced, of course, so the crew would remove the deck panels above the torpedoes and load the torpedoes into the torpedo rooms inside the pressure hull using essentially the same procedure they would use in port. U-boats that had externally stowed torpedoes simply had them stored under the deck, but outside the pressure hull. The flat deck of a U-boat is part of the outside hull, as is much of the sail/conning tower. You're probably aware that submarines have an inner pressure hull, which is strong and cylindrical and meant to keep out water, and an outer hull which is meant to give the boat its hydrodynamic shape.
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