Orkan-class fast attack craft

	ORP Grom
Class overview
Builders	VEB Peenewerft, Wolgast; Northern Shipyard, Gdańsk;
Operators	Polish Navy
In service	1992–present
Active	3
General characteristics
Type	Fast attack craft
Displacement	369 tonnes
Length	48.90 m (160 ft 5 in)
Beam	8.65 m (28 ft 5 in)
Draft	2.15 m (7 ft 1 in)
Propulsion	3 diesel M520 engines 3,970 kW (5,320 hp) each
Speed	36 knots (67 km/h; 41 mph)
Range	3,000 km (1,600 nmi)
Complement	33
Sensors &; processing systems	Sea Giraffe 3-D radar,; STING EO fire control radar;
Armament	8 × RBS-15 Mk. III anti-ship missiles (ships often carry just 4 missiles); 1 × 76 mm (3 in) AK-176M gun ; 1 × AK-630 30 mm (1.2 in) gun Close-in weapon system; 1 × 4-rail Strela 2M launcher; 2 x WKM-Bm 12.7 mm heavy machine gun posts;

The Orkan class or projekt 660 (NATO code: Sassnitz class) is series of three fast attack craft of the Polish Navy, in service since 1992.

Class overview
ORP Grom
Builders	VEB Peenewerft, Wolgast Northern Shipyard, Gdańsk
Operators	Polish Navy
In service	1992–present
Active	3
General characteristics
Type	Fast attack craft
Displacement	369 tonnes
Length	48.90 m (160 ft 5 in)
Beam	8.65 m (28 ft 5 in)
Draft	2.15 m (7 ft 1 in)
Propulsion	3 diesel M520 engines 3,970 kW (5,320 hp) each
Speed	36 knots (67 km/h; 41 mph)
Range	3,000 km (1,600 nmi)
Complement	33
Sensors & processing systems	Sea Giraffe 3-D radar, STING EO fire control radar
Armament	8 × RBS-15 Mk. III anti-ship missiles (ships often carry just 4 missiles) 1 × 76 mm (3 in) AK-176M gun 1 × AK-630 30 mm (1.2 in) gun Close-in weapon system 1 × 4-rail Strela 2M launcher 2 x WKM-Bm 12.7 mm heavy machine gun posts