Displacement:           650 tons (standard),

                                 1,025 tons (full war load)

Length:                       186 ft (57 m)

Beam:                         31 ft (9.4 m)

Draught:                    8.5 ft (2.6 m)

Propulsion:               triple expansion engine,

                                    2 shafts, 2,000 hp

Speed:                        15 knots (28 km/h;

                                    17 mph) at 1,750 hp

Complement:             85

Armament:                 1 × 12-pounder gun

                                     (replaced by

                                     1 × 4-inch HA gun)

                                     3 × Oerlikons

                                     (later reduced to 2)

                                     1 × Bofors

                                     (installed later)

                                     Machine guns

                                     Depth charges

                                     chutes and throwers