Launched in 1918, completed in 1918, displacement 357 (surfaced)-454 (submerged) tons, horsepower 480 (submerged)-600 (surfaced) hp, oil-fired internal combustion machinery (surfaced)-electric machinery (submerged) and an armament of 4 torpedo tubes for which she carried with her 8 torpedoes. Just to be used for coastal defence tasks.
Source
Archive Dutch Naval Staff 1886-1942 (National Archive at the Hague, Netherlands) inventory number 155. Fleets (the British Empire and foreign countries) on 1 February 1923.
