|Shipyard||Kaiserliche Werft, Danzig|
|Ordered||27 May 1916|
|Launched||16 Dec 1916|
|Commissioned||8 Jan 1918|
There was another U 137 in World War Two
That boat was launched from its shipyard on 18 May 1940 and commissioned into the Kriegsmarine on 15 Jun 1940. Take a look at U 137 from WWII.