Launched in 1922, displacement 850 (surfaced)-1.250 (submerged) tons, horsepower 1.8000 (surfaced)-1.400 (submerged) hp, oil-fired internal combustion machinery (surfaced)-electric machinery (submerged) and an armament of 1-4” gun.4 torpedo tubes and able to carry 254 mines.
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.
