U-27 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-27 (Germany), was the lead ship of the Type U 27 class of submarines; launched in 1913 and served in the First World War until sunk on 19 August 1915; the events surrounding U-27's sinking are known as the Baralong Incident
- During the First World War, Germany also had these submarines with similar names:
- SM UB-27, a Type UB II submarine launched in 1915 and sunk on 27 July 1917
- SM UC-27, a Type UC II submarine launched in 1916 and surrendered on 3 February 1919
The UB II type submarine was a class of U-boat built during World War I by the German Imperial Navy. They were enlarged from the preceding type UB I and were more effective vessels. The boats were a single hull design with a 50-metre maximum diving depth and a 30-45 second diving time. In 1915 and 1916, 30 were built at two different shipyards.
SM UC-27 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 29 August 1915 and was launched on 28 June 1916. She was commissioned into the German Imperial Navy on 25 July 1916 as SM UC-27. In 14 patrols UC-27 was credited with sinking 57 ships, either by torpedo or by mines laid.
Type UC II minelaying submarines were used by the Imperial German Navy during World War I. They displaced 417 tons, carried guns, 7 torpedoes and up to 18 mines. The ships were double-hulled with improved range and seakeeping compared to the UC I type.
- During the First World War, Germany also had these submarines with similar names:
- German submarine U-27 (1936), a Type VIIA submarine that served in the Second World War until sunk on 20 September 1939
- German submarine U-27 (S176), a Type 206 submarine of the Bundesmarine that was launched in 1974 and scrapped in 1996
SM U-27 was a German Type U-27 U-boat built for service in the Imperial German Navy. She was launched on 14 July 1913, and commissioned on 8 May 1914 with Kapitänleutnant Bernd Wegener in command.
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-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).
U-27 or U-XXVII may also refer to:
- SM U-27 (Austria-Hungary), lead boat of the U-27-class submarines for the Austro-Hungarian Navy
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.
The U-27 class was a class of eight submarines or U-boats built for and operated by the Austro-Hungarian Navy during World War I. The class was based upon the German Type UB II design of the German Imperial Navy and was constructed under license in Austria-Hungary.
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