WWI U-boats

UC 21

 

Type

UC II

Shipyard Blohm & Voss, Hamburg  (Werk 271)
Ordered 29 Aug 1915 Laid down  
Launched 1 Apr 1916 Commissioned 12 Sep 1916 
Commanders
15 Sep 1916 - 9 Jun 1917  Oblt. Reinhold Saltzwedel
10 Jun 1917 - 30 Sep 1917   Werner von Zerboni di Sposetti
Career 11 patrols
14 Nov 1916 - 30 Sep 1917 Flandern Flotilla
Successes98 ships sunk for a total of 134,139 tons.
5 ships damaged for a total of 11,826 tons.
1 ship taken as prize for a total of 148 tons.
1 ship damaged for a total of 778 tons. 
Fate 30 Sep 1917 - Departed Zeebrugge for the Bay of Biscay on 13.9. Lost by unknown cause on or after Sept. 16, 1917. 27 dead (all hands lost). 

See the 105 ships hit by UC 21


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