Project 10510 icebreaker

Scale model presented by Rosatom
Class overview
BuildersZvezda shipyard
OperatorsFSUE Atomflot (planned)
Preceded byProject 22220
CostRUB 125.57 billion
Built2020–
In service
  • 2027 (original plan)
  • 2030 (current estimate)
Planned1
Building1
General characteristics
TypeIcebreaker
Displacement69,700 tonnes (68,600 long tons)
Length209 m (686 ft)
Beam47.7 m (156 ft)
Draft13 m (43 ft)
Depth20.3 m (67 ft)
Installed power
Propulsion
  • Nuclear-turbo-electric
  • Four shafts (4 × 30 MW)
Speed24 knots (44 km/h; 28 mph)
Endurance8 months
Crew127

Project 10510, also known through the Russian type size series designations LK-110Ya and LK-120Ya or the project name Leader (Russian: Лидер, romanized: Lider), is a planned series of Russian nuclear-powered icebreakers. Designed in the 2010s, when built in the 2020s, it would supersede Project 22220 icebreakers as the largest and most powerful icebreakers in the world.

As of 2024, the lead ship of the series is under construction and expected to be commissioned by 2030, three years after the original planned delivery in 2027. Initially there were plans to build two additional sister ships by 2033, but in February 2023 it was reported that only one Project 10510 ship would be built before 2035.