U-15 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-15 (Germany), was a Type U 13 submarine launched in 1911 and that served in the First World War until sunk on 9 August 1914
- During the First World War, Germany also had these submarines with similar names:
- SM UB-15, a Type UB I submarine launched in 1915; transferred to Austria-Hungary on 14 June 1915 and became SM U-11 (Austria-Hungary); broken up in Pola in 1920
- SM UC-15, a Type UC I submarine launched in 1915 and lost in November 1916
SM UC-15 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 19 May 1915. She was commissioned into the German Imperial Navy on 28 June 1915 as SM UC-15. Mines laid by UC-15 during her eight patrols are credited with sinking 3 ships. UC-15 disappeared in November 1916.
The Type UC I coastal submarines were a class of small minelaying U-boats built in Germany during the early part of World War I. They were the first operational minelaying submarines in the world. A total of fifteen boats were built. The class is sometimes also referred to as the UC-1 class after SM UC-1, the class leader.
Austria-Hungary, often referred to as the Austro-Hungarian Empire or the Dual Monarchy, was a constitutional monarchy in Central and Eastern Europe from 1867 to 1918. It was formed by giving a new constitution to the Austrian Empire, which devolved powers on Austria (Cisleithania) and Hungary (Transleithania) and placed them on an equal footing. It broke apart into several states at the end of World War I.
SM U-11 or U-XI was a U-10-class submarine in the Austro-Hungarian Navy during World War I. She was originally a German Type UB I submarine commissioned into the German Imperial Navy as SM UB-15.
Pula is the largest city in Istria County, Croatia and the eighth largest city in the country, situated at the southern tip of the Istria peninsula, with a population of 57,460 in 2011. It is known for its multitude of ancient Roman buildings, the most famous of which is the Pula Arena, one of the best preserved Roman amphitheaters, and its beautiful sea. The city has a long tradition of wine making, fishing, shipbuilding, and tourism. It was the administrative centre of Istria from ancient Roman times until superseded by Pazin in 1991.
- During the First World War, Germany also had these submarines with similar names:
- German submarine U-15 (1936), a Type IIB submarine that served in the Second World War and was sunk on 30 January 1940
- German submarine U-15 (S194), a Type 206 submarine of the Bundesmarine that was launched in 1974 and is still in service
SM U-15 was one of the three Type U 13 gasoline-powered U-boats produced by the German Empire for the Imperial German Navy. On 9 August 1914, U-15 became the first U-boat loss to an enemy warship after it was rammed by British light cruiser HMS Birmingham.
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.
The Type UB I submarine was a class of small coastal submarines (U-boats) built in Germany at the beginning of the First World War. 20 boats were constructed, most of which went into service with the German Imperial Navy. Boats of this design were also operated by the Austro-Hungarian Navy and the Bulgarian Navy. In the Austro-Hungarian Navy, it was called the U-10 class.
U-15 or U-XV may also refer to:
- SM U-15 (Austria-Hungary), a U-10 class submarine of the Austro-Hungarian Navy
SM U-15 or U-XV was a U-10-class submarine or U-boat of the Austro-Hungarian Navy during World War I. U-15 was constructed in Germany and shipped by rail to Pola where she was assembled and launched in April 1915. She was commissioned in October 1915. U-15 was the most successful boat of the U-10 class, sinking six ships totaling more than 8,000 gross register tons (GRT). The boat survived the war and was handed over to Italy as a war reparation and scrapped in 1920.
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