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German submarine U-23 (1936): Wikis


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Career (Nazi Germany)
Name: U-23
Ordered: February 2, 1935
Builder: Germaniawerft, Kiel
Yard number: 553
Laid down: April 11, 1936
Launched: August 28, 1936
Commissioned: September 24, 1936
Fate: Scuttled September 10, 1944 off the coast of Turkey in the Black Sea.
Class and type: Type II U-boat
Service record
Part of: Kriegsmarine:
1. Unterseebootsflottille
21. Unterseebootsflottille
30. Unterseebootsflottille
Identification codes: M 01 984
Commanders: Eberhard Godt
Hans-Günther Looff
Otto Kretschmer
Heinz Beduhn
Heinrich Driver
Kurt Reichenbach-Klinke
Ernst-Ulrich Brüller
Ulrich Gräf
Rolf-Birger Wahlen
Rudolf Arendt
Operations: 16
Victories: 7 ships sunk for a total of 11,179 gross register tons (GRT)
2 warships sunk for a total of 1.410 tons
1 auxiliary warship damaged for a total of 1,005 GRT
1 warship damaged for a total of 56 tons
3 ships a total loss for a total of 18,199 GRT

German submarine U-23 was a Type IIB U-boat of the German Kriegsmarine, built in Germaniawerft, Kiel, laid down on April 11, 1936 and commissioned on September 24, 1936.


At 4:45 am on October 4, 1939, U-23 scored one of the early successes of the Kriegsmarine in the war when she torpedoed and sank by gunfire the merchant ship Glen Farg about 60 miles south-southwest of Sumburgh Head. One person died, while 16 survivors were picked up by HMS Firedrake and landed at Kirkwall the next day.

In 16 patrols U-23 sank seven ships for a total of 11,179 gross register tons (GRT) including two warships, as well as damaging a warship and an auxiliary warship.

Over the course of her service with the Kriegsmarine U-23 had ten commanding officers, the most famous of whom was Kapitänleutnant Otto Kretschmer, who went on to become the top scoring U-boat ace. After service in the Atlantic with the 1. Unterseebootsflottille, U-23 served as a school boat with the 21. Unterseebootsflottille from July, 1940 until September, 1942. U-23 was then refit and transported overland to the Black Sea port of Constanţa, Romania, with the 30. Unterseebootsflottille until September, 1944.


U-23 was scuttled by her crew on September 10, 1944 off the coast of Turkey in the Black Sea at position 41°11′N 30°00′E / 41.183°N 30°E / 41.183; 30 to prevent capture by the advancing Soviets.

On February 3, 2008, The Telegraph reported that U-23 had been discovered by Selçuk Kolay, a Turkish marine engineer, in 160 feet of water, three miles from the town of Agva.[1]




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