U-104 may refer to one of the following German submarines:
Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.
- SM U-104, a Type U 57 submarine launched in 1917 and that served in the First World War until sunk on 25 April 1918
- During the First World War, Germany also had these submarines with similar names:
- SM UB-104, a Type UB III submarine launched in 1917 and that disappeared in September 1918
- SM UC-104, a Type UC III submarine launched in 1918 and surrendered on 24 November 1918; broken up at Brest in July 1921
Brest is a city in the Finistère département in Brittany. Located in a sheltered position not far from the western tip of the peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon. The city is located on the western edge of continental Europe. With 142,722 inhabitants in a 2007 census, Brest is at the centre of Western Brittany's largest metropolitan area, ranking third behind only Nantes and Rennes in the whole of historic Brittany, and the 19th most populous city in France; moreover, Brest provides services to the one million inhabitants of Western Brittany. Although Brest is by far the largest city in Finistère, the préfecture of the department is the much smaller Quimper.
The Type UB III submarine was a class of U-boat built during World War I by the German Imperial Navy.
SM UC-104 was a German Type UC III minelaying submarine or U-boat in the German Imperial Navy during World War I.
Type UC III minelaying submarines were used by the Imperial German Navy during World War I. They displaced 474 tonnes at the surface and 571 t submerged, carried guns, 7 torpedoes and up to 14 mines. The ships were double-hulled with improved range and sea-keeping compared to the UC II type. The type had better seagoing, maneuvering and turning capabilities than its predecessor, while underwater stability was reduced.
- During the First World War, Germany also had these submarines with similar names:
- German submarine U-104 (1940), a Type IXB submarine that served in the Second World War until she went missing after 28 November 1940
SM U-104 was a German Type U 57 U-boat during the First World War. U-104 was built at AG Weser in Bremen, launched on 3 July 1917 and commissioned on 12 August 1917. She completed four patrols under Kptlt. Kurt Bernis and was responsible for the sinking of eight vessels of a total of 10,795 gross register tons (GRT). Among these was the American lightship LV 71, stationed at Diamond Shoals; the latter reported the submarine's presence in the area, at which point Bernis notified the lightship of his intentions and allowed her crew to depart before shelling the vessel and sinking her.
World War I, also known as the First World War or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. It is also one of the deadliest conflicts in history, with an estimated nine million combatants and seven million civilian deaths as a direct result of the war, while resulting genocides and the 1918 influenza pandemic caused another 50 to 100 million deaths worldwide.
SM UB-104 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 March 1918 as SM UB-104.
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