Russia’s Atomflot, Zvezda Sign Contract for Construction of Project 10510 Leader Nuclear Icebreaker

FSUE Atomflot (Rosatomflot), a subsidiary Russia’s Rosatom State Nuclear Energy Corporation, and shipbuilder Zvezda LLC signed a contract on the construction of the Project 10510 Leader nuclear icebreaker Leader on April 23.

The document was signed remotely by FSUE Atomflot general director Mustafa Kashka and Zvezda LLC general director Sergey Tseluyko with the parties respectively located in Murmansk and Vladivostok.

When built, the icebreaker would supersede the Project 22220 nuclear icebreakers as the largest and most powerful icebreakers in the world. As per the terms of the contract, the vessel is expected to be commissioned in 2027.

Project 10510 Leader Nuclear Icebreaker
Artist’s rendering of Russia’s Project 10510 Leader nuclear icebreaker being constructed for Rosatomflot by Zvezda Shipyard. Rosatom Photo.

“Today, an important step has been taken in the history of [Russia’s] nuclear icebreaker fleet,” said FSUE Atomflot general director Mustafa Kashka.

“Leader will be equipped with two state-of-the-art RITM-400 nuclear reactors developed by Rosatom specialists, giving the vessel a total capacity of 120 MW, which will allow it to overcome ice more than 4 meters thick. The commissioning of this nuclear icebreaker will allow us to guarantee safe and regular operations in the eastern region of the Arctic Ocean, year-round navigation in the waters of the Northern Sea Route, and new possibilities for carving out high-latitude commercial routes.”

Project 10510, also known through the Russian type size series designations LK-110Ya and LK-120Ya or the project name Leader (Lider), is a planned series of Russian nuclear-powered icebreakers. In total, it is planned to build three vessels by 2033.

According to Rosatom, the Project 10510 icebreaker will be built in accordance with technical specifications delineated by the central design bureau Iceberg and will be equipped with RITM-400 nuclear reactors developed by Rosatom subsidiary, JSC Afrikantov OKBM.

Project 10510 Leader Nuclear Icebreaker
Artist’s rendering of Russia’s Project 10510 Leader nuclear icebreaker being constructed for Rosatomflot by Zvezda Shipyard. Rosatom Photo.

Main characteristics of project 10510 nuclear icebreaker:

– Power capacity: 120 MW
– Maximal speed: 22 knots
– Length: 209 meters
– Width: 47.7 meters
– Maximal ice penetration: 4 meters
– Displacement: about 69,700 tonnes
– Main power equipment: a nuclear power system equipped with two RITM-400 reactors; a steam turbine unit equipped with four turbo-generators, each with a power capacity of 37 MW; an electric propulsion system equipped with four propeller motors, each with a power capacity of 30 MW.

Zvezda shipbuilding complex, based in the city of Bolshoi Kamen of Russia’s Primorsky Territory and overseen by Rosneft, is the sole contractor for this Rosatom-commissioned project. Rosatomflot operates the world’s only nuclear icebreaker fleet.



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