SM U-93
Introduction '''SM ''U-93''''' was one of the 329 submarines serving in the Imperial German Navy in World War I. ''U-93'' was engaged in the naval warfare and took part in the First Battle of the Atlantic.
Design German Type U 93 submarines were preceded by the shorter Type U 87 submarines. ''U-93'' had a displacement of  when at the surface and  while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two  engines for use while surfaced, and two  engines for use while submerged. She had two propeller shafts. She was capable of operating at depths of up to .The submarine had a maximum surface speed of  and a maximum submerged speed of . When submerged, she could operate for  at ; when surfaced, she could travel  at . ''U-93'' was fitted with six  torpedo tubes (four at the bow and two at the stern), twelve to sixteen torpedoes, and one  SK L/30 deck gun. She had a complement of thirty-six (thirty-two crew members and four officers).
Operational history HMS ''Prize'' Q-ship attacking ''U-93''After February 1917 she was commanded by the late author of books (e.g. ''U boat 202.The war diary of a German submarine, 1919'') and experienced submarine commander Edgar von Spiegel von und zu PeckelsheimOn 30 April 1917 about  south of Ireland, in the Atlantic, ''U-93'' attacked HMS ''Prize'', a three-masted topsail schooner (one of the Q ships) commanded by Lieutenant William Edward Sanders (who received a Victoria Cross for the action). HMS ''Prize'' was damaged by shellfire. After the 'panic party' had taken to the boats and the ship appeared to be sinking, the U-boat approached to within  of her port quarter, whereupon the White Ensign was hoisted and the ''Prize'' opened fire.Within a few minutes the submarine was on fire and her bows rose in the air, whilst the ''Prize'' was further damaged. The U-boat disappeared from sight, and was believed to have been sunk by the crew of the ''Prize'' and by several of the German crew (including her captain) who had been blown or jumped into the sea.Neither of the crippled ships had sunk, with the ''Prize'' being towed in flames back to Kinsale, while the ''U-93'' struggled back to the Sylt nine days later after a dramatic escape effort through the British mine and destroyer barrages off Dover. ''U 93'' after repairs operated in the English channel. She was lost to unknown cause off Hardelot, France in January 1918.The wreck was located by divers in 2003.
Summary of raiding history DateNameNationalityTonnageFate15 April 1917''Fram''105Sunk18 April 1917''Troldfos''1,459Sunk18 April 1917''West Lothian''1,887Sunk22 April 1917''Vestelv''1,729Sunk28 April 1917''Diana''207Damaged29 April 1917''Comedian''4,889Sunk29 April 1917''Ikbal''5,434Sunk30 April 1917''Ascaro''3,245Sunk30 April 1917''Horsa''2,949Sunk30 April 1917''Parthenon''2,934Sunk30 April 1917HMS ''Prize''199Damaged19 June 1917''Louise''645Sunk27 June 1917''Baron Ogilvy''4,570Sunk4 July 1917''Kodan''308Sunk12 August 1917''Bestum''3,520Sunk14 August 1917''Asti''5,300Sunk20 August 1917''Elswick Lodge''3,558Sunk21 August 1917''Volodia''5,689Sunk23 August 1917''Carl F. Cressy''898Sunk25 August 1917''Heatherside''2,767Sunk25 August 1917''Ovar''1,650Sunk26 August 1917''Marmion''4,066Sunk26 August 1917''Minas Queen''492Sunk29 August 1917''Treloske''3,071Sunk18 October 1917''Macao''3,557Sunk27 October 1917''D. N. Luckenbach''2,929Sunk28 October 1917USAT ''Finland''12,222Damaged29 October 1917''La Epoca''2,432Sunk30 October 1917''Liff''2,521Sunk2 January 1918''Veda''25Sunk4 January 1918''Goeland I''235Sunk6 January 1918''Kanaris''3,793Sunk6 January 1918''Harry Luckenbach''2,798Sunk6 January 1918''Henri Lecour''2,488Sunk6 January 1918''Dagny''1,220Sunk14 January 1918''Babin Chevaye''2,174Sunk15 January 1918''War Song''2,535Sunk
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