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LK-16 Project 21900M Murmansk

The icebreaker Project 21900M (also known as LK-16) is a series of three diesel-electric icebreakers destined for the Russian Federation. The project 21900 is developed for large-scale oil tanker assistance, as well as towing, transportation and rescue missions in icy waters.

The 21900M icebreakers are two-deck vessels with an extended tank, with an medium engine room, with two full-rotor helm columns in the stern and a bow thruster, with a built-in superstructure shifted to the nose, a helicopter landing area at the bow and open deck in the stern.

Work as a line icebreaker providing high maneuverability and icebreaking capability (it can move steadily in the ice up to 1.5 m thick).

  • Towing of vessels and other floating platforms in the ice conditions and open water;
  • Assisting vessels in distress and rescue operations in ice conditions and open water;
  • Delivery of necessary equipment and participation in oil spill response operations using its on-board equipment;
  • Provision of underwater technical works using equipment and specialized systems installed on board the vessel in the drilling rig and oil platform areas, seabed studies, search and rescue operations;
  • Fire-fighting on vessels, drilling and oil platforms;
  • Implementation of some other special operations at sea.
Diesel-electric icebreakers with a capacity of about 18 MW of Project 21900 (LK16) are designed to operate as a linear icebreaker while ensuring high maneuverability and ice breakability (continuous movement in ice at a thickness of up to 1.5 meters). The diesel-electric power plant consists of four main generating sets Wartsila 12V32 and two auxiliary Wartsila 9L32. The powerhouse of the icebreaker project 21900M consists of two parts: medium voltage (shield 6.3 kV) and low voltage (shield 400 V). The rated power of transformers is 1600 kVA. The rated power of the parking generator is 760 kW. To control the main power plant, the W-PMS system is used. DEIF Delomatic 4 is used to monitor the auxiliary power plant. Two DEIF Delomatic 4 controllers are used to control two auxiliary generators and four inputs from the MV switchboard. A separate Delomatic 4 controller controls the sectional switch. Low voltage panels are designed and manufactured by VNIIR (St. Petersburg). Two ships of the kind have already been constructed at the Baltic Yard in 2008 and 2009 respectively. The first icebreaker 21900M "Vladivostok" successfully passed the sea trials and was accepted by the customer. The second icebreaker Murmansk was ready for road tests in December 2015, and the third icebreaker Novorossiysk was scheduled to be delivered by December 2016. Another three diesel-engined vessels of the project 21900 were under construction at the Vyborg Yard.

PJSC "Vyborg Shipyard" (VSZ, Leningrad region) on December 26, 2016, FSUE "Rosmorport" transferred the diesel-electric icebreaker "Novorossiysk" project 21900M. The Novorossiysk icebreaker is the final ship of a series of three ships that were built at the Vyborg plant. The head ship of the Vladivostok series was handed over to the customer in September 2015. The second ship "Murmansk" was commissioned in December 2015.

Builder Vyborg Shipyard
Vessel class KM?Icebreaker 6 [2] AUT1-ICS FF2WS EPP ECO BWM HELIDECK Special purpose ship
Displacement: - full 14,322 tons
deadweight 5340 tons
Length overall 119.4- 119.8 m
Beam overall 27.5 m
height 12.4 m
Minimum draft 8.5 m
Delivered power 17.4 MW
Icebreaking capability ice
  • 1.5 m thick (steady movement in a continuous ice field)
  • 1,3 m reverse
  • Speed (open water) 17 knots
    Autonomy 40 days
    Crew 35 people.
    Special personnel 22 people.

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    Page last modified: 12-03-2018 18:49:29 ZULU