An item reported the completion in 1922 of 1-55 feet boat with a displacement of 11 tons, a 750 hp horsepower, internal combustion gasoline or petrol fuelled machinery and an armament of 2-18” torpedoes or depth charges and 4 machineguns.
A second item reported the completion in 1922 of 1-45 feet boat, a 750 hp horsepower, internal combustion gasoline or petrol fuelled machinery and an armament of 1-18” torpedo or depth charges and 2 4 machineguns.
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.