U-Boat Operations

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Kriegsmarine and U-Boat history

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U-Boat Operations

Major contributors to this section:
Commanders, Flotillas & Yards — Fernando Almeida
Ships, General — Werner Freitag
Ship Details — David Rayner & Walter Janssens
Detail Consultant — Horst Schmeisser
Patrols, Fates and Air Attacks — Howard Cock

U-633	Type VIIC
Feldpost Number	M 22 922
Construction Yard	Blohm und Voß, Hamburg
Yard Number	609
Ordered	15th Aug 1940
Keel laid	22nd Sep 1941
Launched	10th Jun 1942
Commissioned	30th Jul 1942
Baubelehrung	8.KLA, Hamburg
Training, Flotillas and Duties
07.42 - 02.43	5.U-Flottille, Kiel Ausbildungsboot (under training)
02.43 - 03.43	9.U-Flottille, Brest Frontboot (operational)
Commanders
07.42 - 03.43	OL Bernhard Müller

Operations information for U-633

20.02.1943 - 10.03.1943
First Sailing - active patrol
U-633 left Kiel under the command of Bernhard Müller on 20th Feb 1943. The boat was lost on 10th Mar 1943.
At 0928 HRS on 7th Mar 1943 U-633 came under attack from an aircraft of RAF 220 Squadron. U-633 was only slightly damaged in the attack.
Bernhard Müller hit one ship on this patrol from convoy SC-121.

On 8th Mar 1943 he sank the British 3,921 ton Guido, sailing with convoy SC-121.

Notes for U-633

We have 44 crew names for this boat. click here for crew names of U 633
You can perform other crew searches here. Note that the number of names we give possibly includes prior crew members.

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