Launched in ?, completed in 1918, displacement 735 (surfaced)-910 (submerged) tons, horsepower 2.600 (surfaced)-1.100 (submerged) hp, oil-fired internal combustion machinery (surfaced)-electric machinery (submerged) and an armament of 2-3“ guns and 6-18“ 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.
