German World War II submarine
German submarine "U-923" was a Type VIIC U-boat of Nazi Germany's "Kriegsmarine" during World War II.
She was ordered on 6 June 1941, and was laid down on 21 February 1942 at Neptun Werft AG, Rostock, as yard number 510. She was launched on 7 August 1943 and commissioned under the command of "Leutnant zur See" Heinz Frömmer on 4 October 1943.
Design.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-923" had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two SSW GU 343/38-8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . "U-923" was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA mines, one SK C/35 naval gun, (220 rounds), one Flak M42 and two twin C/30 anti-aircraft guns. The boat had a complement of between 44 — 52 men.
Service history.
"U-923" sunk 9 February 1945, in the Bay of Kiel in the Baltic Sea after striking a British air-laid mine. The crew of 48 were all lost.
The wreck is located at .
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