SM UC-11 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 23 November 1914, laid down on 26 January 1915, and was launched on 11 April 1915. She was commissioned into the German Imperial Navy on 23 April 1915 as SM UC-11."SM" stands for "Seiner Majestät" () and combined with the U for Unterseeboot would be translated as His Majesty's Submarine. Mines laid by UC-11 in her 83 patrols were credited with sinking 27 ships. UC-11 was mined and sunk on 26 June 1918. A crew member was Rudolf Finkler from Oberlinxweiler, Kreis St. Wendel, Germany. According to his death record the boat went down in the North Sea near Harwich, abt. north east of Funk Feuerschiff on position .
Design A Type UC I submarine, UC-11 had a displacement of when at the surface and while submerged. She had a length overall of , a beam of , and a draught of . The submarine was powered by one Benz six-cylinder, four-stroke diesel engine producing , an electric motor producing , and one propeller shaft. 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 . UC-11 was fitted with six mine tubes, twelve UC 120 mines, and one machine gun. She was built by AG Weser Bremen and her complement was fourteen crew members.
Summary of raiding history DateNameNationalityTonnageMerchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.Fate1 June 1915865Damaged9 June 1915Erna Boldt1,731Sunk9 June 1915Lady Salisbury1,446Sunk10 June 1915HMS TB 10255Sunk10 June 1915HMS TB 12255Sunk15 June 1915Argyll280Sunk20 October 1916Huguenot1,032Sunk24 October 1916Framfield2,510Sunk26 October 1916HMT Lord Roberts293Sunk21 November 1916Helena1,798Sunk29 November 1916HMT Lord Airedale215Sunk9 December 1916Forth1,159Sunk9 December 1916Harlington1,089Sunk9 December 1916Harlyn1,794Sunk17 December 1916Michail Ontchoukoff2,118Sunk29 December 1916Zoroaster3,803Sunk8 January 1917HMD Cape Colony82Sunk2 February 1917HMT Holdene274Sunk12 February 1917Foreland1,960Sunk14 February 1917Marie Leonhardt1,466Sunk26 April 1917HMS Mercury378Damaged27 April 1917HMT Agile246Sunk24 September 1917HMD Hastfen77Sunk25 October 1917Wearside3,560Sunk27 October 1917HMT Strymon198Sunk24 November 1917French Rose465Sunk25 November 1917Ostpreussen1,779Sunk27 November 1917Groeswen3,570Sunk16 January 1918HMT John E. Lewis253Sunk13 June 19184,219Damaged
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