Anchusa-class. Launched in 1917, completed in 1918, displacement 1.290 tons, horsepower, 2.500 hp, coal fuelled reciprocating machinery and an armament of 2-3pd guns.
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.