SM ''U-13'') and combined with the ''U'' for ''Unterseeboot'' would be translated as ''His Majesty's Submarine''., group=Note was one of the 329

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

s serving in the Imperial German Navy in World War I. ''U-13'' was engaged in the

naval warfare Naval warfare is combat in and on the sea, the ocean, or any other battlespace involving a major body of water such as a large lake or wide river. Mankind has fought battles on the sea for more than 3,000 years. Even in the interior of large la ...

and took part in the First Battle of the Atlantic. She had left Heligoland on 6 August 1914 and was not heard from again. She may have been a victim of the German defensive minefield in Heligoland Bight, or from an accident or mechanical failure.

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* {{DEFAULTSORT:U0013 World War I submarines of Germany Type U 13 submarines 1910 ships Ships built in Danzig U-boats commissioned in 1912 U-boats sunk in 1914 U-boats sunk by unknown causes World War I shipwrecks in the North Sea Ships lost with all hands Maritime incidents in August 1914