Launched in 1917, completed in 1918, displacement 516 (surfaced)-730 (submerged) tons, horsepower 1.100 (surfaced)-760 (submerged) hp, oil-fired internal combustion machinery (surfaced)-electric machinery (submerged) and an armament of 1-4.1“ gun, 1 machine gun and 5 torpedo tubes.
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.
