Wikipedia

Murmansk (2015 icebreaker)

Murmansk (Russian: Мyрманск) is a Russian Project 21900M diesel-electric icebreaker. While her construction was contracted to Vyborg Shipyard in Russia, she was built at Arctech Helsinki Shipyard in Finland and delivered to Rosmorport in 2016.

Murmansk under construction in Helsinki, Finland, in June 2015
History
Russia
NameMurmansk (Мyрманск)
NamesakeMurmansk
OwnerRosmorport[1]
Port of registrySaint Petersburg[2]
Ordered
BuilderArctech Helsinki Shipyard (Helsinki, Finland)[9]
Cost
  • About RUB 4 billion[8]
  • About 100 million euro[9]
Yard number509[2]
Laid down26 December 2012[7]
Launched25 March 2015[4]
Sponsored byMarina Kovtun[4]
Completed25 December 2015[3]
Identification
StatusIn service
General characteristics [2]
Class and typeProject 21900M icebreaker
Tonnage
Displacement14,334 tonnes
Length119.8 m (393 ft)
Beam27.5 m (90 ft)
Draught8.5 m (28 ft)
Depth12.40 m (41 ft)
Ice classRMRS Icebreaker6
Installed power4 × Wärtsilä 12V32E (4 × 6,960 kW)
PropulsionDiesel-electric; two Steerprop SP 110 ARC PULL azimuth thrusters (2 × 9,000 kW)
Speed
  • 17 knots (31 km/h; 20 mph) (open water)
  • 3.5 knots (6.5 km/h; 4.0 mph) in 1 m (3.3 ft) ice[10]
Aviation facilitiesHelideck for Mi-8

Murmansk, which represents a further development of the icebreakers Moskva and Sankt-Peterburg, has two identical sister ships: Vladivostok and Novorossiysk.

Development and construction edit

Main article: Project 21900M icebreaker

In the 2000s, Russia began renewing the state-owned icebreaker fleet that, at the time, consisted mainly of Soviet-era vessels dating back to the 1970s and 1980s.[11] In July 2004, the Saint Petersburg-based Baltic Shipyard won an international tender for the construction of two 16-megawatt diesel-electric icebreakers for Rosmorport, a state-owned company established in 2003 to manage Russia's port infrastructure and operate its fleet of diesel-powered icebreakers.[12] These icebreakers, Moskva (delivered in 2008) and Sankt-Peterburg (2009), were the first non-nuclear icebreaker built in Russia for over three decades and the first new icebreakers ordered following the dissolution of the Soviet Union.[13]

In 2011, the Russian government decided to continue the fleet renewal within the framework of the federal program Development of the Transport System of Russia (2010–2020) with three additional 16-megawatt diesel-electric icebreakers.[11][14] The construction of the first icebreaker awarded to Vyborg Shipyard on 2 December 2011.[5][15] On 23 February 2012, the remaining two vessels were also contracted to Vyborg Shipyard which was acquired by the state-owned United Shipbuilding Corporation (USC) to solve the shipyard's financial problems.[5][16]

The new icebreakers, referred to as Project 21900M, represent a further development of the original Project 21900 design.[11] Modifications to the original design include, among smaller general improvements, a slightly different diesel-electric power plant configuration and more efficient pulling-type propulsion units where the propeller is facing forward. While Project 21900M vessels were still sometimes referred to as "16-megawatt icebreakers",[17] their propulsion power was increased to 18 megawatts. Externally, the most apparent difference is the helideck which has been moved to the foredeck and enlarged for the bigger Mil Mi-8 helicopter.[18]

Although the construction of the new icebreaker was awarded to Vyborg Shipyard, the Russian shipyard subcontracted the hull assembly, outfitting and commissioning of the vessel to Arctech Helsinki Shipyard. The contract with the Finnish shipyard, which at the time was a joint venture between USC and STX Finland (a subsidiary of STX Europe, which in turn was a subsidiary of the South Korean STX Offshore & Shipbuilding), was signed on 18 December 2012.[6] The keel-laying ceremony was held in Vyborg already on 26 December, after which the blocks were transferred to Helsinki for hull assembly.[7] The vessel was ceremonially launched on 25 March 2015 and floated out from the shipyard's covered dry dock few days later.[4][19] On 18 December, after completing the sea trials that began in late November,[20] the new icebreaker was delivered to Vyborg Shipyard where she was handed over to Rosmorport on 25 December 2015.[3][21]

Like the preceding Project 21900 icebreakers, the new icebreakers are also named after major cities of Russia with Murmansk representing the largest city above the Arctic Circle. Previously, the same naming scheme was also used for a series of five diesel-electric polar icebreakers built by the Finnish shipbuilder Wärtsilä in the 1960s;[22] the previous Murmansk was in service in 1968–1995.[23]

Design edit

Murmansk is 119.8 metres (393 ft) long overall and 104 metres (341 ft) between perpendiculars,[2] and has a moulded beam of 27.5 metres (90 ft).[24] Fully laden, the 14,334-tonne (14,108-long-ton) icebreaker draws 8.5 metres (28 ft) of water.[2] While her official Russian Maritime Register of Shipping ice class is Icebreaker6,[2] Murmansk's hull and propulsion units are strengthened to meet the requirements for Icebreaker7, a higher ice class intended for icebreaking operations in the Arctic.[25][26]

Murmansk has a fully integrated diesel-electric propulsion system with main diesel generators supplying power for both main propulsion as well as ship's service loads while underway. Her main power plant consists of four 12-cylinder Wärtsilä 12V32E four-stroke medium-speed diesel engines rated at 6,960 kilowatts (9,330 hp) each.[2] In addition, there are two 800-kilowatt (1,100 hp) Wärtsilä 4L20 auxiliary diesel generators for use when the vessel is at port and a 200-kilowatt (270 hp) emergency diesel generator.[18]

For main propulsion, Murmansk is fitted with two electrically driven azimuth thrusters. Her two Steerprop SP 110 ARC PULL Z-drive units,[27] each driven by two 4,500-kilowatt (6,000 hp) electric propulsion motors in tandem configuration,[18] were the most powerful mechanical azimuth thrusters in the world at the time of delivery.[28] With a total propulsion power of 18,000 kilowatts (24,000 hp), Murmansk can achieve a service speed of 17 knots (31 km/h; 20 mph) in open water[2] and break up to 1.5 metres (4.9 ft) thick level ice.[29] In addition, she has a transverse bow thruster for maneuvering.[24]

Career edit

Murmansk is based in Saint Petersburg and normally escorts merchant ships in the Gulf of Finland during the winter navigating season.[30] However, in April 2016 the icebreaker sailed to the Arctic together with her sister vessel Vladivostok for full-scale ice trials.[31]

Murmansk has also participated once in the annual Festival of Icebreakers in Saint Petersburg; the icebreaker was open to visitors in 2017.[citation needed]

References edit

 
Wikimedia Commons has media related to Murmansk.
  1. ^ a b "Murmansk (9658666)". Equasis. Ministry of Ecology, Sustainable Development and Energy. Retrieved 19 May 2019.
  2. ^ a b c d e f g h "Murmansk (120132)". Register of ships. Russian Maritime Register of Shipping. Retrieved 19 May 2019.
  3. ^ a b "Icebreaker Murmansk project 21900M delivered to the customer at Vyborg Shipyard". Vyborg Shipyard. December 2015. Retrieved 4 August 2019.
  4. ^ a b c "Icebreaker Murmansk for the Russian Ministry of Transport launched today at Arctech Helsinki Shipyard". Arctech Helsinki Shipyard. 25 March 2015. Archived from the original on 21 July 2015. Retrieved 4 August 2019.
  5. ^ a b c "The contract for construction of two diesel-powered open sea icebreakers has signed". Vyborg Shipyard. February 2012. Retrieved 20 May 2019.
  6. ^ a b "Next icebreaker project 21900M will be built by Vyborg Shipyard in cooperation with Arctech Helsinki Shipyard". Vyborg Shipyard. December 2012. Retrieved 20 May 2019.
  7. ^ a b "Next icebreaker project 21900M was laid at Vyborg Shipyard JSC". Vyborg Shipyard. December 2012. Retrieved 4 August 2019.
  8. ^ "USC and Vyborg Shipyard to build two icebreakers of Project 21900M". PortNews. 24 February 2012. Retrieved 20 May 2019.
  9. ^ a b "Arctech Helsinki Shipyardille 16 MW jäänmurtajatilaus Venäjän liikenneministeriöltä" (PDF) (in Finnish). Arctech Helsinki Shipyard. 19 December 2012. Retrieved 20 May 2019.
  10. ^ "16 MW icebreaker" (PDF). Arctech Helsinki Shipyard. Retrieved 15 June 2019.
  11. ^ a b c "Ломая лед" (PDF), ОСК (in Russian), 4 (8): 24, 2011, retrieved 20 May 2019
  12. ^ "Для Приморска построят ледоколы" (in Russian). dp.ru. 21 October 2004. Retrieved 20 May 2019.
  13. ^ "RosMorPort takes delivery of diesel-electric icebreaker Moskva built by Baltiysky Zavod". PortNews. 11 December 2008. Retrieved 19 May 2019.
  14. ^ "Подписан акт приема-передачи дизель-электрического ледокола "Владивосток" (фото)" (in Russian). PortNews. 9 October 2015. Retrieved 4 August 2019.
  15. ^ "Выборгский СЗ и ОСК подписали соглашение о строительстве дизельного ледокола мощностью 16 мВт" (in Russian). PortNews. 5 December 2011. Retrieved 20 May 2019.
  16. ^ "ОСК спасает Выборгский завод" (in Russian). United Shipbuilding Corporation. 23 February 2012. Retrieved 4 August 2019.
  17. ^ "16 MW Icebreaker" (PDF). Arctech Helsinki Shipyard. Retrieved 18 December 2015.
  18. ^ a b c ""Мурманск" для Петербурга: каков ледокол проекта 21900М?" (in Russian). Korabel.ru. 16 April 2018. Retrieved 19 May 2019.
  19. ^ "Icebreaker Murmansk floated out of the dry dock". Arctech Helsinki Shipyard. 8 April 2015. Retrieved 4 August 2019.
  20. ^ "Icebreaker Murmansk left on Sea Trial". Arctech Helsinki Shipyard. 29 November 2015. Retrieved 4 August 2019.
  21. ^ "Icebreaker Murmansk delivered at Arctech Helsinki Shipyard". Arctech Helsinki Shipyard. 18 December 2015. Retrieved 4 August 2019.
  22. ^ Wärtsilä-yhtymä O/Y Hietalahden telakka (1960), 22000 ahv:n polaarijäänmurtajat Moskva ja Leningrad, Helsinki: Oy Weilin & Göös Ab
  23. ^ "Murmansk (6723678)". Sea-web. S&P Global. Retrieved 3 August 2019.
  24. ^ a b "Murmansk (9658666)". Sea-web. S&P Global. Retrieved 19 May 2019.
  25. ^ "Icebreaker of 21900M Project Hull Float Out Ceremony". Rosmorport. 29 April 2014. Retrieved 15 June 2019.
  26. ^ "Rules for the Classification and Construction of Sea-Going Ships, Part I: Classification". Russian Maritime Register of Shipping. 2019. Retrieved 9 June 2019.
  27. ^ "Steerprop propulsors ordered for Russian icebreakers". MarineLog. 10 January 2013. Retrieved 19 May 2019.
  28. ^ "Steerprop propulsion for Russian icebreakers". The Motor Ship. Mercator Media. 8 January 2013. Retrieved 19 May 2019.
  29. ^ "Lead Icebreaker of 21900 Project Hits the Water". World Maritime News. 5 May 2014. Retrieved 19 May 2019.
  30. ^ "Icebreaking Services". Rosmorport. Retrieved 4 August 2019.
  31. ^ "Arctic tests for Russia's new icebreakers". Eye on the Arctic. Radio Canada International. 6 April 2016. Retrieved 4 August 2019.
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