SM UB-5

SM UB-5 was a German Type UB I submarine or U-boat in the Imperial German Navy (German: Kaiserliche Marine) during World War I. She sank five ships during her career and was broken up in Germany in 1919.

UB-5 was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. UB-5 was a little more than 28 metres (92 ft) in length and displaced between 127 and 142 tonnes (125 and 140 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-5 was broken into sections and shipped by rail to Antwerp for reassembly. She was launched and commissioned there as SM UB-5 in March 1915.

UB-5 was initially assigned to the Flanders Flotilla in March 1915 and sank five British ships of 996 gross register tons (GRT) under the command of Wilhelm Smiths. The U-boat was assigned to the Baltic Flotilla in October 1915, and relegated to a training role from September 1916. At the end of the war, UB-5 was deemed unseaworthy and unable to surrender at Harwich with the rest of Germany's U-boat fleet. She remained in Germany where she was broken up by Dräger at Lübeck, Germany, in 1919.