She was commissioned into the German Imperial Navy on 24 May 1918 as SM UB-116.

[Note 1] UB-116 was sunk by a remote-controlled mine at 58°50′N 3°4′W / 58.833°N 3.067°W / 58.833; -3.067 off Orkney while making an attempt to enter Scapa Flow in order to attack units of the British Grand Fleet as part of the final German Naval offensive of the war.

[2] According to Uboat.net, UB-116 hit a mine and was next finished off by depth charges while trying to reach the empty Scapa anchorage.

Like all Type UB III submarines, UB-116 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun.

UB-116 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,420 nautical miles (13,740 km; 8,540 mi).