|Ordered||2 Feb 1935|
|Laid down||11 Apr 1936||F. Krupp Germaniawerft AG, Kiel (werk 553)|
|Launched||28 Aug 1936|
|Commissioned||24 Sep 1936|
|Successes||7 ships sunk, total tonnage 11,179 GRT|
2 warships sunk, total tonnage 1,410 tons
1 auxiliary warship damaged, total tonnage 1,005 GRT
1 warship damaged, total tonnage 56 tons
3 ships a total loss, total tonnage 18,199 GRT
Scuttled at 2210hrs on 10 September 1944 in the Black Sea north of Agra, Turkey, in position 41.11N, 30.00E.
This boat is a dive site7 Feb 2008. The 3 boats, U-19, U-20 and U-23, scuttled in September 1944 off the Turkish coast have been located. They are reported to be in excellent condition. Position (lat, long): 41.11, 30.00
See more U-boat dive sites.
Attacks on this boat and other events
14 Oct 1939
The British submarine HMS Sturgeon (Lt. G.D.A. Gregory, RN) fired three torpedoes at U-23 in the Skagerrak some 20 nautical miles WNW of Skagen, Denmark in position 57º49N, 09º59E. All three missed.
1 recorded attack on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-23 did not suffer any casualties (we know of) until the time of her loss.
We have 2 emblem entries for this boat. See the emblem page for this boat or view emblems individually below.
The Olympic Rings - Crew 36
Alster Pirates football club colours
There was another U-23 in World War One
That boat was launched from its shipyard on 12 Apr 1912 and commissioned into the Imperial Navy on 11 Sep 1913. The Naval war in WWI was brought to an end with the Armistice signed on 11 Nov, 1918. Read about SM U 23 during WWI.