|Shipyard||Blohm & Voss, Hamburg (Werk 273)|
|Ordered||29 Aug 1915|
|Launched||29 Feb 1916|
|Commissioned||17 Jul 1916|
|Successes||45 ships sunk with a total of 41,820 tons.|
1 ship damaged with a total of 35 tons.
3 ships taken as prize with a total of 1,559 tons. (View ships hit by UC 23)
|Fate||25 Nov 1918 - Surrendered at Sevastapol. Became a french prize. Broken up at Bizerta in August 1921.|