SM UC-104
SM UC-104 was a German Type UC III minelaying submarine of the Imperial Navy in World War I. Ordered on 12 January 1916, she was built by Blohm & Voss in Hamburg (yard 338), launched on 25 May 1918 and commissioned on 18 October 1918.
As a UC III boat, UC-104 displaced about 491 tonnes on the surface and 571 tonnes submerged. She was about 56.51 metres long, with a beam of 5.54 metres and a draft of 3.77 metres. Propulsion came from two diesel engines and two electric motors, allowing speeds of 11.5 knots on the surface and 6.6 knots underwater. Her range was 9,850 nautical miles at 7 knots when surfaced, and 40 nautical miles at 4.5 knots when submerged. Test depth was 75 metres. The crew numbered around 32.
Armament included six mine tubes with 14 UC 200 mines, three torpedo tubes (two bow, one stern) with seven torpedoes, and a deck gun (either 10.5 cm or 8.8 cm). UC-104 could dive in about 15 seconds.
In service, UC-104 conducted no war patrols and sank no ships. She was surrendered to France on 24 November 1918 and was broken up at Brest in July 1921.
This page was last edited on 2 February 2026, at 23:31 (CET).