Ivan Susanin-class patrol ship

Class overview
Builders	Admiralty Shipyard, Leningrad
Operators	Soviet Navy; Soviet Border Troops; Russian Navy; Russian Coast Guard;
Preceded by	Project 52K
Succeeded by	Purga class; Okean class; Project 23550;
Built	1972–1981
In commission	1972–present
Completed	8
Active	4
Scrapped	4
General characteristics
Type	Icebreaking patrol ship
Displacement	2,785 t (2,741 long tons) (standard); 3,710 t (3,650 long tons) (full load);
Length	70 m (230 ft)
Beam	18.1 m (59 ft)
Draught	6.5 m (21 ft)
Installed power	3 × 13D100 (3 × 1,800 hp)
Propulsion	Diesel–electric; two shafts (2 × 2,400 hp)
Speed	15.4 knots (28.5 km/h; 17.7 mph)
Range	6,000 nautical miles (11,000 km; 6,900 mi) (full speed); 10,700 nautical miles (19,800 km; 12,300 mi) at 12.5 knots (23.2 km/h; 14.4 mph);
Endurance	50 days
Complement	10 officers; 113 crew;
Sensors and ; processing systems	MR-302 Rubka ("Strut Curve") surface and air-search radar; MR-105 Turel ("Hawk Screech") fire-control radar;
Armament	1 × twin 76 mm AK-726; 2 × 30 mm AK-630;
Aviation facilities	Helideck for Kamov Ka-25 or Ka-27

Ivan Susanin class, also known by its Soviet designation Project 97P (Russian: 97П), is a series of icebreaking patrol ships built for the Soviet Navy and Soviet Border Troops, and today operated by the Russian Navy and Coast Guard of the Border Service of the FSB.

As of 2024, four Ivan Susanin-class patrol ships remain in service: Ivan Susanin with the Pacific Fleet and Ruslan with the Northern Fleet, both with their armaments removed, and Neva and Volga with the Border Service of the FSB.

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