Built by Richard Dunston, Hessle, United Kingdom for the London Port Authority.
Dimensions 25,90 (waterline)-26,70 (over all) x 7,77 (on thrushes) x 1,98 (hull at midsection)-3,96 (basic) x 4,72 (height sides) metres and a displacement of 255 cubic metres. Maximum horsepower 1.600hp at 1.135rpm.
