One of two torpedo boats (length 126 feet, beam 15 feet; trial speed 21.7 knots) designed and built as a joint venture by Mr. G F G Des Vignes and Messrs. Maudslay, Son, and Field, Lambeth, for the Imperial Ottoman Government was fitted with a 20- inch by (2) 25-inch by 14-inch stroke compound marine engine with steam supplied at 120 pounds per square inch.