SM U-151 or SM Unterseeboot 151 was a World War I U-boat of the Imperial German Navy, constructed by Reiherstieg Schiffswerfte & Maschinenfabrik at Hamburg and launched on 4 April 1917. From 1917 until the Armistice in November 1918 she was part of the U-Kreuzer Flotilla, and was responsible for 34 ships sunk (88,395 GRT) and 7 ships damaged.
SM U-53 was one of the six Type U 51 U-boats of the Imperial German Navy during the First World War.
SM U-6 or U-VI was a U-5-class submarine or U-boat built for and operated by the Austro-Hungarian Navy before and during the First World War. The submarine was built as part of a plan to evaluate foreign submarine designs, and was the second of three boats of the class built by Whitehead & Co. of Fiume after a design by Irishman John Philip Holland.
SM U-66 was the lead ship of the Type U-66 submarines or U-boats for the Imperial German Navy during World War I. The submarine had been laid down in Kiel in November 1913 as U-7, the lead ship of the U-7 class for the Austro-Hungarian Navy. They became convinced after the outbreak of war in August 1914 that none of these submarines could be delivered to the Adriatic via Gibraltar, and sold the entire class, including U-7, to the German Imperial Navy in November 1914.
SM U-27 or U-XXVII was the lead boat of the U-27 class of U-boats or submarines for the Austro-Hungarian Navy. U-27 was built by the Austrian firm of Cantiere Navale Triestino (CNT) at the Pola Navy Yard and launched on 19 October 1916. She was commissioned on 24 February 1917.
SM UB-17 was a German Type UB I submarine or U-boat in the German Imperial Navy during World War I. The submarine disappeared during a patrol in March 1918.
SM UB-6 was a German Type UB I submarine or U-boat in the German Imperial Navy during World War I. The submarine was interned after running aground in neutral Dutch waters, and was scuttled by her crew at Hellevoetsluis.
SM UC-57 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 12 January 1916, laid down on 14 March 1916, and was launched on 7 September 1916. She was commissioned into the German Imperial Navy on 22 January 1917 as SM UC-57. In seven patrols UC-57 was credited with sinking 5 ships, either by torpedo or by mines laid.
SM UC-71 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 12 January 1916 and was launched on 12 August 1916. She was commissioned into the German Imperial Navy on 28 November 1916 as SM UC-71. In 19 patrols UC-71 was credited with sinking 63 ships, either by torpedo or by mines laid. UC-71 sank on 20 February 1919 in the North Sea while on her way to be surrendered. Discovery a century later of her wreck with all hatches open suggested she had been deliberately scuttled by her own crew.
SM U-65 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-65 was engaged in the naval warfare and took part in the First Battle of the Atlantic.
SS Creekirk was a cargo steamship that was built in Scotland in 1912 and sunk with all hands by a German submarine in 1940. At her launch in 1912 she was named SS Mariston. In her 28-year career she was renamed SS Milcovul in 1913, SS Hyphaestos in 1933 and SS Creekirk in 1938.
SS Balto was a Norwegian steamship that was seized by the German Submarine SM U-49 on 6 November 1916 in the Bay of Biscay, and briefly used as a depot ship. She was then scuttled in the Atlantic Ocean 70 nautical miles (130 km) north east of Cape Villano, Spain on 9 November.
SS Colemere was a small freighter built during the First World War. Completed in 1915, she was intended for the West African trade. The ship was sunk by the German submarine SM U-105 in December 1917 with the loss of four crewmen.
SS Delamere was a small freighter built during the First World War. Completed in 1915, she was intended for the West African trade. The ship was sunk by the German submarine SM U-70 in April 1917 with the loss of 10 crewmen.
SS Eskmere was a small freighter built during the First World War. Completed in 1916, she was intended for the West African trade. The ship was sunk by the German submarine SM UC-75 in October 1917 with the loss of 20 crewmen.
SS Redesmere was a small freighter built during the First World War. Completed in 1915, she was intended for the West African trade. The ship was sunk by the German submarine SM U-70 in October 1917.
SS Thorpehall was a small freighter built before the First World War. Completed in 1910, she was intended for the West African trade. During the Spanish Civil War of 1936–1939, the ship was sunk by Nationalist bombers in May 1938.
SS Ellesmere was a small freighter built during the First World War. Completed in 1915, she was intended for the West African trade. The ship was sunk by the German submarine SM U-20 in July 1915.
SS Esemplare was a small freighter built during the first decade of the 20th century. Completed in 1902, she was intended for the West African trade. Sold to an Italian company shortly before the beginning of the First World War in 1914, the ship was captured and scuttled by the German submarine SM UC-27 in August 1917.
SS Gro was a small freighter built in Scotland during the 1890s. Completed in 1895, she was sold to A Swedish company in 1903 and then to a Norwegian company in 1916. During the First World War the ship was sunk by the German submarine SM UC-47 in August 1917.
