WWI U-boats

UB 91

Type UB III
ShipyardVulcan, Hamburg (Werk 107)
Ordered 23 Sep 1916
Launched 7 Mar 1918
Commissioned 11 Apr 1918
Commanders
11 Apr 1918 - 11 Nov 1918 Kptlt. Wolf Hans Hertwig
Career 2 patrols
27 Jun 1918 - 11 Nov 1918 II Flotilla
Successes3 ships sunk with a total of 13,487 tons.
1 warship sunk with a total of 1,181 tons. (View ships hit by UB 91)
Fate 21 Nov 1918 - Surrendered. Broken up at Briton Ferry in 1921..

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