WWI U-boats

UB 31

Type UB II
ShipyardBlohm & Voss, Hamburg (Werk 255)
Ordered 22 Jul 1915
Launched 16 Nov 1915
Commissioned 24 Mar 1916
Commanders
18 Mar 1916 - 11 Aug 1916 Oblt. Karl Vesper (Royal House Order of Hohenzollern)
12 Aug 1916 - 31 Jan 1918 Oblt. Thomas Bieber (Royal House Order of Hohenzollern)
1 Feb 1918 - 2 May 1918 Oblt. (R) Wilhelm Braun
Career 25 patrols
16 May 1916 - 24 Feb 1917 Baltic Flotilla
24 Feb 1917 - 2 May 1918 Flandern Flotilla
Successes27 ships sunk with a total of 73,811 tons.
8 ships damaged with a total of 34,699 tons. (View ships hit by UB 31)
Fate 2 May 1918 - Lost on a mine in the Strait of Dover at 51.01N, 01.16E. 26 dead (all hands lost).

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