SM UB-54

SM UB-54 was a German Type UB III submarine or U-boat in the German Imperial Navy (Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 12 June 1917 as SM UB-54.

She operated as part of the Flanders Flotilla based in Zeebrugge. UB-54 was apparently sunk on 11 March 1918 at 53.25°N, 0.75°W by British destroyers HMS Sturgeon (1917), HMS Thruster (1917), and HMS Retriever (1917) using depth charges, all hands were lost.

Construction
She was built by AG Weser, Bremen and following just under a year of construction, launched at Bremen on 18 April 1917. UB-54 was commissioned later that same year. Like all Type UB III submarines, UB-54 carried 10 torpedoes and was armed with a 8.8 cm deck gun. UB-54 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,020 nmi. UB-54 had a displacement of 516 t while surfaced and 646 t when submerged. Her engines enabled her to travel at 13.4 kn when surfaced and 7.8 kn when submerged.