Orsa-class torpedo boat

	Torpedo boat Pegaso
Class overview
Operators	Regia Marina; Italian Navy;
In commission	1936–1964
Completed	4
Lost	2
General characteristics
Type	Torpedo boat
Displacement	840 long tons (850 t) standard; 1,575 long tons (1,600 t) full load;
Length	82.5 m (270 ft 8 in)
Beam	9.69 m (31 ft 9 in)
Draught	3.74 m (12 ft 3 in)
Propulsion	2 shaft steam turbines; 2 boilers; 16,000 hp (11,900 kW);
Speed	28 knots (32 mph; 52 km/h)
Complement	116
Electronic warfare ; & decoys	Sonar
Armament	2 × 100 mm (4 in) / 47 caliber guns; 10 × 20 mm (0.79 in) anti-aircraft guns; 8 × 13.2 mm (0.52 in) AA machine guns; 4 × 450 mm (18 in) torpedo tubes; 6 × depth charge throwers;

The Orsa class (sometimes called the Pegaso class) were a group of large torpedo boats or destroyer escorts built for the Italian Navy in the late 1930s. They were an enlarged version of the Spica-class torpedo boat, specifically tailored for the escort and anti-submarine role, with greater endurance and a heavier depth charge armament but less powerful machinery and a lighter gun armament. Four were built, with two being lost during the Second World War. The surviving pair were rebuilt as anti-submarine frigates in the 1950s.

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