Project 23550 "Ivan Papanin"

Project 23550 patrol ships have a planned displacement of 6,800 tons, a length of 114 metres (374 ft 0 in) and a draught of 6 metres (19 ft 8 in). They are designed to break through ice up to 1.5 metres (4 ft 11 in) thick. The ships will be equipped with two Project 03160 Raptor type military boats, a Ka-32helicopter and small hovercraft. The core crew is planned at 60 with accommodation for an additional 50 mission specialists. Armament will include a 100 mm gun (some sources state a 76 mm gun) and 3M-54 Kalibr anti-ship missiles.

Project 23550 will have a diesel-electric power plant with four 3,500-kilowatt Kolomna 28-9DG generating sets consisting of 16-cylinder 10D49 diesel engines driving alternators produced by Ruselprom. In addition, the ships will have two auxiliary diesel generating sets with Kolomna diesel engines and Ruselprom alternators. While the early concept featured ABB Azipod azimuthing propulsion units, the builder's model showed conventional shaft lines, propellers and rudders. The 6.3-megawatt propulsion motors will be produced by Ruselprom.[1][6] The ships will have an endurance of 60 days and a range of 6,000 nautical miles (11,000 km; 6,900 mi).

The vessels are strengthened for navigation in ice-covered arctic seas according to the Russian Maritime Register of Shipping ice class Arc6.[4][9]