K II was a unique patrol submarine of the Royal Netherlands Navy.

[3] These were submarines of the OZD that looked like a coffin because of their square upper structure, instead of the more rounded upper structure most other submarines of the OZD had.

[3] The submarine was laid down in Rotterdam at the shipyard of Fijenoord on November 20, 1915.

[2] On September 18, 1923 K II together with K VII, K VIII and the submarine tender Pelikaan began their journey to the Dutch East Indies, the ships' theater of operations.

The ships where delayed when Pelikaan ran aground at Tunis.