SM UC-49 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 20 November 1915 and was launched on 7 November 1916. She was commissioned into the German Imperial Navy on 2 December 1916 as SM UC-49."SM" stands for "Seiner Majestät" () and combined with the U for Unterseeboot would be translated as His Majesty's Submarine. In 13 patrols UC-49 was credited with sinking 26 ships, either by torpedo or by mines laid. UC-49 was sunk by mine off coast of Flanders on 14 August 1918.
Design A Type UC II submarine, UC-49 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 two six-cylinder four-stroke diesel engines each producing (a total of ), two electric motors producing , and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of .
The submarine had a maximum surface speed of and a submerged speed of . When submerged, she could operate for at ; when surfaced, she could travel at . UC-49 was fitted with six mine tubes, eighteen UC 200 mines, three torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one Uk L/30 deck gun. Her complement was twenty-six crew members.
Summary of raiding history DateNameNationalityTonnageMerchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.Fate3 May 1917Helge162Sunk7 May 1917Tore Jarl1,256Sunk9 May 1917Windward Ho226Sunk14 May 1917Bel Lily168Sunk17 June 1917Tosto1,234Sunk22 July 1917Cotovia4,020Sunk23 July 1917HMS Otway12,077Sunk24 July 1917Blake3,740Sunk25 July 1917Dea1,109Sunk25 August 1917Nascent4,969Sunk2 September 1917HMS Dundee2,187Sunk21 October 1917Bunty73Sunk8 December 1917Maindy Bridge3,653Sunk3 January 1918HMW Blackwhale237Sunk24 January 1918Fylgia1,741Sunk24 January 1918Jönköping 21,274Sunk9 February 1918Maggie Smith24Sunk21 February 1918Bør1,149Sunk21 February 1918Reaper91Sunk24 February 1918Amsterdam806Sunk1 May 1918Samsö324Sunk10 June 1918Mountby3,263Sunk13 June 19186,103Sunk22 June 1918Rhea1,308Sunk3 August 19187,713Sunk8 August 1918Portwood2,241Damaged13 August 1918City of Brisbane7,138Sunk
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