|Shipyard||Germaniawerft, Kiel (Werk 191)|
|Ordered||29 Mar 1912|
|Laid down||12 Oct 1912|
|Launched||7 Jan 1914|
|Commissioned||18 Sep 1914|
|Fate||13 Jan 1915 - Final fate unknown. Possibly mined off E coast of UK. The wreck of U 31 was located and identified in the North Sea in 2015. Date of loss is approximate.. 31 dead (all hands lost).|
There was a wartime rumor that the British had found this boat on the surface with the all the crew dead (from gas poisoning) and then towed the boat to a British base. This rumor is not true.
There was another U 31 in World War Two
That boat was launched from its shipyard on 25 Sep 1936 and commissioned into the Kriegsmarine on 28 Dec 1936. Take a look at U 31 from WWII.