O que (quem) é U-20-class submarine - definição
U-20-class submarine
![6}} loads a torpedo during [[World War I]].](https://commons.wikimedia.org/wiki/Special:FilePath/SM U-21 (Austria-Hungary).jpg?width=200 "6}} loads a torpedo during [[World War I]].")
![The conning tower of ''U-20'' on display at the [[Heeresgeschichtliches Museum]] in [[Vienna]]](https://commons.wikimedia.org/wiki/Special:FilePath/U-20.jpg?width=200 "The conning tower of ''U-20'' on display at the [[Heeresgeschichtliches Museum]] in [[Vienna]]")
AUSTRO-HUNGARIAN NAVY SUBMARINES DURING WWI
Havmanden-class submarine (Austria-Hungary); U-20 class submarine (Austria-Hungary); U-20 class submarine; Havmanden class submarine (Austria-Hungary)
The U-20 class was a class of four submarines or U-boats built for and operated by the Austro-Hungarian Navy ( or ) during World War I. The class is sometimes referred to as the Havmanden class because it was based upon the design of the Royal Danish Navy's 1911 s, three of which were built in Fiume.
British U-class submarine
1940 CLASS OF BRITISH SUBMARINES
U class submarine; British u class submarine; U class submarine (British); U-class submarine (British); British U class submarine; U-class submarine; Springeren-class submarine
The British U-class submarines (officially "War Emergency 1940 and 1941 programmes, short hull") were a class of 49 small submarines built just before and during the Second World War. The class is sometimes known as the Undine class, after the first submarine built.
British T-class submarine
![Tribune]]'' in 1942](https://commons.wikimedia.org/wiki/Special:FilePath/On Board HM Submarine Tribune, 1942 TR491.jpg?width=200 "Tribune]]'' in 1942")
1938 CLASS OF BRITISH SUBMARINES
Triton class submarine; HMS Thor (P349); Tempest class submarine; Taciturn class submarine; British t class submarine; Zwaardvisch class submarine; British Triton-class submarine; British Triton class submarine; HMS Thor; British T class submarine; Zwaardvisch-class submarine; Triton-class submarine
The Royal Navy's T class (or Triton class) of diesel-electric submarines was designed in the 1930s to replace the O, P, and R classes. Fifty-three members of the class were built just before and during the Second World War, where they played a major role in the Royal Navy's submarine operations.
