Project 21900 icebreaker
Sankt-Peterburg, the second Project 21900 icebreaker, underway in Kara Sea in 2015 | |
| Class overview | |
|---|---|
| Builders |
|
| Operators | Rosmorport |
| Built |
|
| Planned | 7 |
| Building | 1 |
| Completed | 5 |
| Cancelled | 1 |
| General characteristics (21900, 21900M) | |
| Type | Icebreaker |
| Displacement | 14,300 t (14,100 long tons) |
| Length | 114–119.8 m (374–393 ft) (overall) |
| Beam | 27.5 m (90 ft) |
| Draft | 8.5 m (28 ft) (design) |
| Ice class |
|
| Installed power | Four diesel generating sets |
| Propulsion | Diesel-electric; two azimuth thrusters (2 × 8.2–9 MW) |
| Speed |
|
| Crew | 25 |
| Aviation facilities | Helideck for Ka-32/Ka-226 (21900) or Mi-8 (21900M and 21900M2) |
Project 21900 icebreakers and their derivative designs are a series of Russian diesel-electric icebreakers built in the 2000s. They are also sometimes referred to using the type size series designation LK-16.
The two Project 21900 icebreakers built by Baltic Shipyard, Moskva and Sankt-Peterburg, were the first non-nuclear icebreakers built by a Russian shipyard in over three decades and the first new icebreakers ordered following the dissolution of the Soviet Union. Few years later, three additional icebreakers of a slightly improved design referred to as Project 21900M were ordered from Vyborg Shipyard: two vessels (Vladivostok and Novorossiysk) were built in Russia and the third (Murmansk) was subcontracted to the Finnish shipbuilder Arctech Helsinki Shipyard. One icebreaker of a revised Project 21900M2 design was ordered from Pella Sietas in 2019 and another from Vyborg Shipyard in 2021; the latter (Vyborg) is under construction as of as of 2026.