SM UC-40


SM UC-40 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 20 November 1915 and was launched on 5 September 1916. She was commissioned into the German Imperial Navy on 1 October 1916 as SM UC-40. In 17 patrols UC-40 was credited with sinking 30 ships, either by torpedo or by mines laid. UC-40 was being taken to surrender but foundered in the North Sea en route on 21 January 1919.

Design

A German Type UC II submarine, UC-40 had a displacement of when at the surface and while submerged. She had a length overall of, a beam of, and a draught of. The submarine was powered by two six-cylinder four-stroke diesel engines each producing , two electric motors producing, and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of.
The submarine had a maximum surface speed of and a submerged speed of. When submerged, she could operate for at ; when surfaced, she could travel at. UC-40 was fitted with six mine tubes, eighteen UC 200 mines, three torpedo tubes, seven torpedoes, and one Uk L/30 deck gun. Her complement was twenty-six crew members.

Summary of raiding history

Citations