SM UB-57

SM UB-57 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 30 July 1917 as SM UB-57.

She operated as part of the Flanders Flotilla based in Zeebrugge. UB-57 was sunk at 23:00 on 14 August 1918 at 51.93333°N, 2.03333°W after striking a mine, 34 crew members lost their lives in the event.

Construction
She was built by AG Weser, Bremen and following just under a year of construction, launched at Bremen on 21 June 1917. UB-57 was commissioned later that same year under the command of Kptlt. Otto Steinbrinck. Like all Type UB III submarines, UB-57 carried 10 torpedoes and was armed with a 8.8 cm deck gun. UB-57 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,020 nmi. UB-57 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.