The German Type UE I submarine was an ocean-going single-hull submarine with saddle tanks built by AG Vulkan in Hamburg and Kaiserliche Werft Danzig. The Type UE I was equipped with two six-cylinder Benz engines for for a surface top speed of to . Armed with a single torpedo tube forward and aft, plus one 8.8sp=usNaNsp=us SK L/30 deck gun (U-72 received a 10.5sp=usNaNsp=us SK L/45 gun in 1917), its main weapon were the 38 mines in two minelaying tubes. The boats were crewed by four officers and 28 men for a complement of 32.
| Boat | Fate | |
|---|---|---|
| surrendered 1919, scrapped | ||
| scuttled 1 November 1918 at Cattaro | ||
| scuttled 30 October 1918 off Pula | ||
| sunk 27 May 1916 in the North Sea | ||
| sunk by mine 13 December 1917 in the North Sea | ||
| sunk 27 January 1917 in the Arctic Ocean | ||
| lost after 5 July 1916 in the North Sea | ||
| sunk 28 October 1918 in the North Sea | ||
| surrendered November 1918, became French submarine Victor Reveille, scrapped 1935 | ||
| surrendered January 1919, scrapped |