Displacement:         650 tons (standard),

                               1,025 tons (full war load)

Length:                     186 feet (57 m)

Beam:                       31 feet (9.4 m)

Draught:                  8.5 feet (2.6 m)

Propulsion:             2 × Yarrow boilers,

                                 2 × triple expansion

                                 steam engines,

                                 2 shafts, 2,000 hp

Speed:                     15 knots

                                 (28 km/h; 17 mph)

Complement:          85

Armament:             1 × 4-inch HA gun

                                 3 × 20 mm Oerlikons

                                 1 × 40 mm Bofors

                                 (installed later)

                                 Machine guns

                                 Depth charges,

                                 chutes and throwers