Project 21900M Icebreakers, Russia
The Project 21900M icebreakers are being built for Russia's Federal Agency of Marine and River Transport (Rosmorrechflot).
The Arctic is the first vessel of three Project 22220 LK-60 Nuclear Icebreakers being built for Atomflot.
Two icebreakers are being built by Vyborg Shipyard, while the third vessel is under construction at Arctech Helsinki Shipyard. The Project 21900M icebreakers were designed by CDB Baltsudoproekt.
Development of Project 21900M icebreakers
The keels of three upgraded diesel-electric icebreakers were laid at Vyborg Shipyard in late 2012. The first ship in class, Vladivostok, was launched in April 2014 and commissioned in the fourth quarter of 2015.
The second icebreaker, Murmansk was launched in March 2015 by Arctech Helsinki Shipyard under an outfitting contract with Vyborg. The third vessel in series, Novorosiisk was launched in October 2015. The icebreakers are scheduled to be commissioned by 2016 under the federal target programme of the Russian Transport System Development (Marine Transport) for 2010-2020.
The Project 21900M will be operated by the Federal State Unitary Enterprise Rosmorport and will be deployed in the Baltic Sea and the Arctic Sea under the Russian Federation flag.
Project 21900M design and features
The Project 21900? is an advanced variant of the Project 21900-class designed by CDB Baltsudoproekt. The ship integrates a long forecastle and houses engine room in the middle and propellers in the aft. It is equipped with an ice-strengthened hull, allowing operation in ice thicknesses up to 1.5m.
The propulsion system also enables the clearance of 1.3m-thick ice in reverse direction. The unique technical solutions incorporated in the design allow the vessel to achieve improved icebreaking capability and long-endurance.
The icebreakers are designed to independently navigate heavy-tonnage vessels, tow ships and floating platforms in ice and open water, and aid incapacitated vessels in ice and open water. The vessel will also be used for carrying containers on upper deck, fire-fighting on floating objects and assisting distress vessels in ice and open water.
The vessel measures 119.8m-long, 27.5m-wide and 8.5m-deep at design waterline. The deadweight at design draught is 5,340t.
The Project 21900M icebreakers will be capable of sailing in temperatures as low as -40°?. Each vessel can complement 36 crew members and 22 special personnel.
Cargo and capacities of the Russian icebreakers
The 21900M-class features an aft cargo deck of 800m², which can accommodate 33 TEUs, including refrigerated containers with power supply, and other types of cargo. The double-decked vessels are equipped with a fore helicopter deck for supporting the operations of a single helicopter.
The icebreakers can carry 3,620m³ of heavy fuel oil, 200m³ of diesel fuel oil, 30m³ of oil, 390m³ of alkaline solution, 390m³ of fresh water, 15m³ of service water and 4,900m³ of ballast water. The vessel incorporates API Marine's ultrasonic tank switch (UTS), universal temperature transmitter (UTT) and universal pressure transmitter (UPT) sensors for monitoring ballast tanks.
The four Wärtsilä main diesel generator sets aboard the vessel are rated at 6,750kW each. The propulsion system, integrating two full-circle azimuth thrusters and a steerable propeller, generates a total power output of 17.4MW.
The icebreaker is also equipped with two 760kW harbour diesel generators, two 4,00kW thermal boiler units and a 200kW emergency diesel generator set.
The vessel has a maximum speed of 17k and range of 11,000nmi, and can endure at sea for 40 days.