Project 664-class torpedo boat

	ORP Sprawny in the 1980s
Class overview
Name	Project 664 class torpedo boat
Builders	Stocznia Pólnocna, Gdańsk
Operators	Polish Navy
Built	1961-1972
In commission	1965-1980s
Completed	8
Retired	8
Scrapped	7
Preserved	1
General characteristics
Type	Torpedo boat
Displacement	94 t (93 long tons) standard; 128 t (126 long tons) full;
Length	24.76 m (81 ft 3 in)
Beam	7.79 m (25 ft 7 in)
Draft	1.61 m (5 ft 3 in)
Propulsion	CODAG; 4 × M-50F3 diesel engines, each 1,200 PS (883 kW); 1 × TM-1 gas turbine, 5,132 PS (3,775 kW) sustained power, 7,200 PS (5,296 kW) max power; 4 × propeller shafts;
Speed	49.28 knots (91.27 km/h; 56.71 mph) maximum; 43 kn (80 km/h; 49 mph) max sustained; 28 kn (52 km/h; 32 mph) travel;
Range	410 nmi (760 km; 470 mi) at 16 kn (30 km/h; 18 mph)
Complement	20 officers and enlisted
Sensors and ; processing systems	MR-102 surveillance and torpedo fire control radar
Armament	Twin AK-230 gun with Kolonka optical sight, 1000 rounds of ammunition; 4 × 533 mm (21 in) torpedo tubes, 4 torpedoes; Minelaying capabilities: 2 aft torpedo tubes can be exchanged with ramps for 2 × AMD-1000 or 4 × AMD-500 or 20 × JaM naval mines;

The Project 664 (NATO reporting name Wisla) class were Polish torpedo boats, designed in Poland in the 1970s. They were one of the few vessels of this size, powered by a gas turbine, and could achieve a great speed.

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