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German submarine U-733

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Title: German submarine U-733  
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Subject: 21st U-boat Flotilla, 31st U-boat Flotilla, U-boats scuttled in 1945, U-boats commissioned in 1943, U-boats sunk in 1943
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German submarine U-733

History General characteristics Service record
Nazi Germany
Laid down:
Class & type:
Installed power:
Test depth:
Identification codes:

German submarine U-733 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 15 October 1941 at the Schichau-Werke yard at Danzig, launched on 5 September 1942, and commissioned on 14 November 1942 under the command of Oberleutnant zur See Wilhelm von Trotha.


German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-733 had a displacement of when at the surface and while submerged. It 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 AEG GU 460/8–27 double-acting electric motors producing a total of for use while submerged. It had two shafts and two propellers. It 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, it could operate for at ; when surfaced, it could travel at . U-733 was fitted with five torpedo tubes (four fitted at its bow and one at its stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. It had a complement of between forty-four and sixty.

Service history

On 8 April 1943,

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