Built at John I. Thornycroft, Chiswick, England in 1886, displacement 17 tons and as dimensions 69.5 x 8.1 x 2.8 feet, 1 screw, horsepower 170 ihp, speed during trials 15,7 knots, coal bunker capacity 1 ton, crew numbered 6 men and the armament consisted of 2 torpedo tubes and 1 machinegun.