Vishnya-class intelligence ship

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SSV-535 Kareliya (foreground) and USS Texas in 1988
Class overview
Builders	Stocznia Północna, Gdańsk, Poland
Operators	Soviet Navy  Russian Navy
Preceded by	Balzam class
Succeeded by	Yury Ivanov class
In commission	1985–present
Planned	7
Completed	7
Active	7
General characteristics
Type	Intelligence collection ship
Displacement	3,470 tons full load
Length	91.5 m (300 ft 2 in)
Beam	14.6 m (47 ft 11 in)
Draught	4.5 m (14 ft 9 in)
Propulsion	2 shafts, 2x Zgoda Sulzer 12AV 25/30 diesel engines, 4,400 bhp (3,300 kW)
Speed	16 knots
Complement	146 (= 6 passengers)
Sensors and processing systems	Radar:[1] MR-212/201 (Palm Frond) Sonar: MG-349, MGP-303
Electronic warfare & decoys	Various intercept arrays and radio direction finding equipment
Armament	2 AK-630 six-barreled Gatling 30 mm/L60 guns 2 SA-N-8 surface-to-air missiles

The Vishnya class (NATO reporting name) (also known as the Meridian class),^[2] Soviet designation Project 864,^[2] are a group of intelligence collection ships built for the Soviet Navy in the 1980s. The ships continue in service with the Russian Navy.^[3] The Russian Navy operates seven of these ships.^[2]