SM UC-1 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy () during World War I. The U-boat had been ordered by November 1914 and was launched on 26 April 1915. She was commissioned into the German Imperial Navy on 5 July 1915 as SM UC-1."SM" stands for "Seiner Majestät" () and combined with the U for Unterseeboot would be translated as His Majesty's Submarine. Mines laid by UC-1 in her 80 patrols were credited with sinking 41 ships. UC-1 disappeared after 18 July 1917.
Design A Type UC I submarine, UC-1 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 Daimler-Motoren-Gesellschaft six-cylinder, four-stroke diesel engine producing , an electric motor producing , and one propeller shaft. She was capable of operating at a depth of .
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-1 was fitted with six mine tubes, twelve UC 120 mines, and one machine gun. She was built by AG Vulcan Stettin 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.Fate30 June 1915320Sunk14 July 1915Rym1,073Sunk15 July 1915HMT Agamemnon II225Sunk30 July 1915Prince Albert1,820Sunk31 July 1915Galicia5,922Damaged8 August 1915HMT Ben Ardna197Sunk14 August 1915Highland Corrie7,583Damaged9 September 1915Balakani3,696Sunk22 October 1915HMT Scott288Sunk9 November 1915Irene543Sunk27 November 1915Klar518Sunk3 December 1915HMT Etoile Polaire278Sunk16 December 1915Levenpool4,844Damaged24 December 1915HMT Carilon226Sunk24 December 1915Embla1,172Sunk2 January 1916Glocliffe2,211Damaged18 January 1916Rijndam12,527Damaged19 January 1916Leoville775Sunk28 January 1916Perth3,522Damaged30 January 1916Maasdijk3,557Sunk11 February 1916Alabama891Sunk25 March 1916Duiveland1,297Sunk27 March 1916Empress of Midland2,224Sunk4 April 1916Bendew3,681Sunk12 April 1916Colombia5,644Damaged20 April 1916Lodewijk Van Nassau3,350Sunk2 May 1916Fridland4,960Damaged26 May 1916El Argentino6,809Sunk18 June 1916Mendibil-mendi4,501Sunk26 June 1916Astrologer912Sunk26 June 1916HMT Tugela233Sunk28 June 1916Mercurius129Sunk30 June 1916HMT Whooper302Sunk16 July 1916Alto2,266Sunk16 July 1916Mopsa885Sunk30 July 1916Claudia1,144Sunk11 August 1916F. Stobart801Sunk23 August 1916HMT Birch215Sunk27 August 1916HMD Ocean Plough99Sunk31 August 1916HMD Tuberose67Sunk1 September 1916Dronning Maud1,102Sunk4 September 1916HMT Jessie Nutten187Sunk6 October 1916Lanterna1,685Sunk8 November 19161,027Sunk28 December 1916Torpilleur 317100Sunk1 January 1917Sussex5,686Damaged15 January 1917Port Nicholson8,418Sunk11 May 1917303Sunk24 June 1917HMS Kempton810Sunk24 June 1917HMS Redcar810Sunk
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