SM UB-54
SM UB-54 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 12 June 1917 as SM UB-54.
The submarine conducted 6 patrols and sank 14 ships during the war for a total loss of.
She operated as part of the Flanders Flotilla based in Zeebrugge. UB-54 was apparently sunk on 11 March 1918 at by British destroyers,, and using depth charges, all hands were lost.