U20 Class Submarine (1916)
From The Dreadnought Project
The four U20 class submarines were completed in 1916 and 1917.
Armament
Guns
One 6.6CM/L18 for U20-22 One 4.7CM/L44 for U23
Torpedoes
Two 45CM tubes; carried four torpedoes.
See Also
Footnotes
Bibliography