WWI U-boats

UB 21

 

Type

UB II

Shipyard Blohm & Voss, Hamburg  (Werk 251)
Ordered 30 Apr 1915 Laid down  
Launched 26 Sep 1915 Commissioned 18 Feb 1916 
Commanders
20 Feb 1916 - 26 Nov 1916   Ernst Hashagen
27 Nov 1916 - 9 Sep 1917   Franz Walther
10 Sep 1917 - 28 Apr 1918   Walter Scheffler
29 Apr 1918 - 7 Oct 1918   Bruno Mahn
Career 26 patrols
14 Apr 1916 - 1 Feb 1917 I Flotilla
1 Feb 1917 - 10 Sep 1917 II Flotilla
10 Sep 1917 - 29 Apr 1918 V Flotilla
29 Apr 1918 - 7 Oct 1918 I Flotilla
7 Oct 1918 - 11 Nov 1918 training Flotilla
Successes33 ships sunk for a total of 36,648 tons.
1 ship damaged for a total of 3,734 tons.
4 ships taken as prize for a total of 2,722 tons. 
Fate 24 Nov 1918 - Surrendered. Sank off the English East coast on the way to be broken up in 1920..  

See the 38 ships hit by UB 21


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