Vishnya-class intelligence ship
Ship class
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The Vishnya class, Soviet designation Project 864, are a group of intelligence collection ships built for the Soviet Navy in the 1980s. The ships continue in service with the Russian Navy. The Russian Navy operates seven of these ships. Wikipedia
Armament: 2 AK-630 six-barreled Gatling 30 mm/L60 guns; 2 SA-N-8 surface-to-air missiles
Electronic warfare & decoys: Various intercept arrays and radio direction finding equipment
Sensors and processing systems: Radar: MR-212/201 (Palm Frond) Sonar: MG-349, MGP-303
Speed: 16 knots