SM UB-57 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 30 July 1917 as SM UB-57.
She operated as part of the Flanders Flotilla based in Zeebrugge. UB-57 was thought to have sunk with all hands at 23:00 on 14 August 1918 at after striking a mine, but on April 14th 2025, an already marked wreck at a depth of 17 meters, just west of the Westhinder shoal, close to the border with France was formally identified as the UB-57.
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 deck gun. UB-57 would carry a crew of up to 3 officer and 31 men and had a cruising range of . UB-57 had a displacement of while surfaced and when submerged. Her engines enabled her to travel at when surfaced and when submerged.
Summary of raiding history DateNameNationalityTonnageTonnages are in gross register tonsFate7 October 1917Alcyone116Sunk11 October 1917Joshua60Sunk20 October 1917Leander2,968Sunk20 October 1917Nitedal1,714Sunk22 October 1917Novillo2,336Sunk23 October 1917Seistan4,238Sunk23 October 1917Tredegar Hall3,764Sunk22 November 1917Krosfond1,707Sunk24 November 1917Nyassa2,579Sunk27 November 1917Almond Branch3,461Sunk27 November 1917Eastfield2,145Sunk22 December 1917Mabel Baird2,500Sunk23 December 1917Vellore1,672Sunk26 December 1917Benito4,712Sunk26 December 1917Tregenna5,772Sunk28 December 1917Clara2,425Sunk29 December 1917Tiro1,442Sunk5 February 1918Alamance4,455Sunk6 February 1918Westmoreland9,512Damaged7 February 1918Ardbeg227Sunk7 February 1918Ben Rein212Sunk7 February 1918Limesfield427Sunk12 February 1918Eleanor1,980Sunk12 February 1918Polo1,383Sunk14 February 1918Carlisle Castle4,325Sunk14 February 1918War Monarch7,887Sunk17 March 1918Anne Yvonne102Sunk17 March 1918Arvor52Sunk17 March 1918Beata102Sunk19 March 1918Luxor3,571Sunk23 March 1918Sequoya5,263Damaged29 March 1918India5,990Damaged29 March 1918T. R. Thompson3,538Sunk31 March 1918Alcinous6,743Damaged31 March 1918Excellence Pleske2,059Sunk29 April 1918Australier3,687Sunk29 April 1918Broderick4,321Sunk29 April 1918La Somme1,477Sunk30 April 1918Ella Sayer2,549Sunk30 April 1918Umba2,042Sunk1 May 1918Canonesa6,683Damaged2 May 1918Unity1,091Sunk22 May 1918Red Rose423Sunk23 May 1918HMS Moldavia9,500Sunk26 May 1918Kyarra6,953Sunk27 May 1918Joseph Simone8Sunk27 May 1918Petit Georges10Sunk27 May 1918Souvenir de Ste Marie7Sunk30 May 1918War Panther5,260Damaged31 May 1918Galileo6,287Damaged30 June 1918Wilton4,281Damaged2 July 1918Royal Sceptre3,858Damaged2 July 1918Shirala5,306Sunk6 July 1918Huntscraft5,113Damaged5 August 1918Tuscan Prince5,275Damaged8 August 1918Clan Macvey5,815Sunk9 August 1918Glenlee4,915Sunk
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