Displacement 800 (surfaced)-1.500 (submerged) tons, horsepower 1.000 (surfaced)-1.500 (submerged) hp, oil-fired internal combustion machinery while surfaced- electric machinery while submerged and an armament of 1-3“ guns, 4-21” torpedo tubes and could take 12 torpedoes with her.
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.
