Dobrynya Nikitich-class icebreaker

Ivan Kruzenstern showing the rounded tumblehome hull of the Dobrynya Nikitich-class icebreakers
Class overview
Name
BuildersAdmiralty Shipyard (Leningrad, USSR)
OperatorsVarious
Subclasses
  • 97 (icebreaker)
  • 97A (icebreaker)
  • 97K (icebreaker)
  • 97E (icebreaker)
  • 97AP (patrol icebreaker)
  • 97P (patrol ship)
  • 97D (hydrographic survey vessel)
  • 97B (hydrographic survey vessel)
  • 97N (research vessel)
Built1960–1981
In service1960–present
Completed32
Active7
Laid up1
Lost1
Scrapped22
Preserved1
General characteristics [1]
TypeIcebreaker
Displacement
  • 2,935 t (2,889 long tons)
  • 3,350 t (3,300 long tons) (97AP)[2]
Length67.7 m (222 ft)
Beam18.1 m (59 ft)
Draught
  • 5.35 metres (17.6 ft)
  • 6.3 m (21 ft) (97AP)[2]
Installed power3 × 13D100 (3 × 1,800 hp)
PropulsionDiesel–electric; three shafts (2 × 2,400 hp + 1,600 hp)
Speed14 knots (26 km/h; 16 mph) (maximum)
Range
  • 5,500 nautical miles (10,200 km; 6,300 mi)
  • 6,700 nautical miles (12,400 km; 7,700 mi) (97AP)[2]
Endurance17 days
Crew42
Armament
  • 1 × twin 57 mm ZIF-31-B (97 and 97AP)
  • 1 × twin 25 mm 2M-3M [ru] (97 and 97AP)

Dobrynya Nikitich class, also known by its Soviet designation Project 97, is a diverse series of diesel–electric icebreakers and other icebreaking vessels built in the Soviet Union. In total, 32 vessels were built in various configurations for both civilian and naval service in the 1960s, 1970s and early 1980s, and several remain in service in Russia as of 2024.

Western sources refer to the Project 97 vessels using two different names: Dobrynya Nikitich class for the various icebreaker variants and more heavily-modified derivative designs, and Ivan Susanin class specifically for Project 97P patrol ships.[3][4][5][6]

  1. ^ Kuznetsov 2009.
  2. ^ a b c "Патрульные дизель-электрические ледоколы, проект 97АП". CDB Iceberg. Retrieved 25 May 2023.
  3. ^ "Admiralty Shipyard 194 Leningrad, USSR <Sanitized>" (PDF). CIA.gov. 28 March 2003 [August 1966]. p. 3. Archived (PDF) from the original on 26 January 2024. Retrieved 26 January 2024.
  4. ^ Baker, Arthur J., III (October 1982), "Their Ship Types", Proceedings, vol. 108, no. 10, U.S. Naval Institute{{citation}}: CS1 maint: multiple names: authors list (link)
  5. ^ "Ivan Susanin Class (Project 97P Class) Russian Icebreaker". OE Data Integration Network. Retrieved 27 January 2024.
  6. ^ Polmar 1986.