K V-class submarine
The K V class was a class of three patrol submarines built by the Fijenoord shipyard in Rotterdam for the Royal Netherlands Navy. Designed specifically for colonial service, all three boats spent most of their careers on patrol duty in the waters of the Dutch East Indies. Only K VII remained in active service when the Second World War began for the Netherlands in May 1940, and she was ultimately destroyed by a Japanese air raid on Soerabaja harbour on 18 February 1942.