SM U-110 was a Type U 93 U-boat of the German Imperial Navy during World War I. She was ordered on 5 May 1916 and launched on 28 July 1917. She was commissioned on 25 September 1917 as SM U-110. and assigned to IV Flotilla of the High Seas Fleet, based on the German North Sea coast.
SM UB-81 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 18 September 1917 as SM UB-81.
SM UC-5 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 13 June 1915. She was commissioned into the German Imperial Navy on 19 June 1915 as SM UC-5. She served in World War I under the command of Herbert Pustkuchen and Ulrich Mohrbutter.
SM UC-3 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 28 May 1915. She was commissioned into the German Imperial Navy on 1 June 1915 as UC-3. Mines laid by UC-3 in her 29 patrols were credited with sinking 22 ships and damaging 2 others. UC-3 was caught in a net, detected by hydrophone, and sunk on 23 April 1916 or mined and sunk on 27 May 1916.
SM UC-10 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 14 November 1914 and was launched on 15 July 1915. She was commissioned into the German Imperial Navy on 17 July 1915 as SM UC-10. Mines laid by UC-10 in her 30 patrols were credited with sinking 18 ships. UC-10 was torpedoed and sunk on 21 August 1916 by British submarine HMS E54 at position 52°02′N03°54′E.
SM UC-14 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 28 January 1915, and was launched on 13 May 1915. She was commissioned into the German Imperial Navy on 5 June 1915 as SM UC-14. Mines laid by UC-14 in her 38 patrols were credited with sinking 16 ships, one of which was the Italian pre-dreadnought battleship Regina Margherita, which at 13,427 tonnes displacement was one of the largest ships sunk by U-boats during the war. UC-14 was mined and sunk on 3 October 1917.
SM UB-19 was a German Type UB II submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 30 April 1915 and launched on 2 September 1915. She was commissioned into the German Imperial Navy on 16 December 1915 as SM UB-19. The submarine sank 13 ships in 15 patrols for a total of 10,040 gross register tons (GRT). UB-19 was sunk in the English Channel at 49°56′N2°45′W on 30 November 1916 by British Q ship HMS Penshurst.
SM UB-22 was a German Type UB II submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 2 March 1915 as SM UB-22. The submarine sank 27 ships in 18 patrols for a total of 16,645 gross register tons (GRT). UB-22 was mined and sunk in the same incident with the torpedoboat SMS S16 in the North Sea at 54°40′N6°32′E on 19 January 1918 in a British minefield.
SM UB-27 was a German Type UB II submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 30 April 1915 and launched on 10 February 1916. She was commissioned into the German Imperial Navy on 23 February 1916 as SM UB-27. UB-27 sank 11 ships in 17 patrols for a total of 18,091 gross register tons (GRT).
SM UB-68 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 20 May 1916. It was commissioned into the German Imperial Navy on 5 October 1917 as SM UB-68. The submarine conducted five patrols and sank five ships during the war. Under the command of Karl Dönitz, on 4 October 1918 UB-68 encountered technical problems and had to surface where she was sunk by gunfire at 33°56′N16°20′E. There was one dead and thirty-three survivors. Other sources name the British warships involved in the sinking of UB-68 as HMS Snapdragon and HMS Cradosin, and claim four crew members died in the event.
SM UB-107 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 16 February 1918 as SM UB-107.
SM U-58 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-58 was engaged in the naval warfare and took part in the First Battle of the Atlantic.
SM U-109 was a Type U 93 submarine of the Imperial German Navy in World War I, taking part in the First Battle of the Atlantic. The building contract was confirmed 5 May 1916, and was awarded to Germaniawerft, Kiel. A Type 93 boat, she was launched 25 September 1917 and commissioned 7 November. She was under the command of Otto Ney. On 28 January 1918, she was sunk in the English Channel, possibly by a mine, while diving to avoid ships from the Dover Patrol. She sank no ships.
SM U-45 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-45 was engaged in the naval warfare and took part in the First Battle of the Atlantic.
SM U-161 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-161 was engaged in naval warfare and took part in the First Battle of the Atlantic.
SM UB-56 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 19 July 1917 as SM UB-56.
SM UB-58 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 10 August 1917 as SM UB-58.
SM UB-82 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 8 September 1917 as SM UB-82.
SM UB-83 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 15 October 1917 as SM UB-83.
SM UB-116 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 24 May 1918 as SM UB-116.
German Empire 
