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CCGS Imnaryuaq

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History
Canada
NameImnaryuaq[1][2]
NamesakeInuktitut name for Nelson Head[1]
OwnerGovernment of Canada
OperatorCanadian Coast Guard
Ordered8 March 2025[3]
Builder
CostC$3.26 billion[3][Note 1]
Yard number520 (Helsinki)[5]
Completed2030 (planned)[4]
IdentificationIMO number: 1118725[5]
StatusOrdered[3]
General characteristics [6][7]
TypeIcebreaker
Displacement22,800 tonnes (22,400 long tons)[4]
Length138.5 m (454 ft 5 in)
Beam29.4 m (96 ft 5 in)
Ice classPolar Class 2
Installed power4 × Wärtsilä 16V31 (4 × 9,760 kW)
PropulsionDiesel-electric; two azimuth thrusters and one shaftline[8]
Crew100
Aviation facilitiesHelipad and hangar

CCGS Imnaryuaq is a future Canadian Coast Guard icebreaker that will be built under the Polar Icebreaker Project as part of the National Shipbuilding Strategy. The ship is expected to join the fleet by 2030.

Construction

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Development and construction

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Background

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Main article: Polar Icebreaker Project

On 28 February 2008, Prime Minister Stephen Harper announced a plan to build a new polar icebreaker.[9] The construction of the vessel was included in the National Shipbuilding Procurement Strategy[Note 2] and awarded to Seaspan Vancouver Shipyards on 19 October 2011 as part of the C$8 billion non-combat vessel work package.[10] At the time, the Quebec-based Davie Shipbuilding was undergoing financial restructuring and was disqualified from bidding for the project.[11] After emerging from insolvency, the shipyard submitted several unsolicited proposals to deliver a polar icebreaker to the Government of Canada.[12][13]

In June 2019, the Government of Canada replaced the one-off polar icebreaker in Seaspan's orderbook, initially scheduled for delivery in 2017 and now several years behind schedule,[14] with sixteen smaller multipurpose vessels while it would continue exploring options to build the polar icebreaker possibly at another shipyard.[15] On 28 February 2020, a request for information was issued to all Canadian shipyards, inviting them to provide information to the Government of Canada on domestic shipyard capability and capacity to construct and deliver a polar icebreaker.[16] On 6 May 2021, the Government of Canada announced that two polar icebreakers would be procured, one from Seaspan Vancouver Shipyards and the other from Davie Shipbuilding;[17] the latter had pre-qualified as the third shipyard under the National Shipbuilding Strategy in December 2019 and was formally accepted by Prime Minister Justin Trudeau on 4 April 2023.[18][19] On 16 September 2024, the Government of Canada awarded Davie Shipbuilding a C$14.3 million ancillary contract to advance work on the second polar icebreaker.[20][21]

On 8 March 2025, the Government of Canada awarded a C$3.25 billion contract to Davie Shipbuilding for the construction of the second polar icebreaker under the National Shipbuilding Strategy. In order to accelerate its production, the vessel would be built jointly with the Finnish shipbuilding Helsinki Shipyard that Davie had acquired from its previous Russian owner in 2023.[3]

Construction

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The construction of the polar icebreaker will begin in 2025 and it is scheduled to be delivered to the Canadian Coast Guard in 2030.[4]

Design

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General characteristics

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Imnaryuaq will be based on Davie's Polar Max concept. The vessel will be 138.5 metres (454 ft 5 in) long overall, have a beam of 29.4 metres (96 ft 5 in), and have a displacement of 22,800 tonnes (22,400 long tons). Its onboard facilities are similar to those of the slightly bigger polar icebreaker under construction at Seaspan Vancouver Shipyards: accommodation for 100 persons, helicopter deck and hangar for two helicopters, laboratories and a moon pool, and ability to transport cargo, participate in oil spill response operations, and carry out emergency towing year-round.[7][4]

The vessel will be classified by Lloyd's Register of Shipping.[6] Her ice class, Polar Class 2,[6] is the second highest ice class according to the International Association of Classification Societies (IACS) Unified Requirements for Polar Class Ships and intended for "year-round operation in moderate multi-year ice conditions".[22]

Power and propulsion

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Imnaryuaq will be fitted with a fully integrated diesel-electric propulsion system consisting of four 16-cylinder Wärtsilä 16V31 four-stroke medium-speed diesel generating sets rated at 9,760 kilowatts (13,090 hp) each.[6] The ship's triple-screw propulsion system will consist of two azimuth thrusters on the sides and a fixed shaftline in the middle.[8] For maneuvering and dynamic positioning, it will also have two bow thrusters.[7]

The polar icebreaker will be capable of breaking 2-metre (6.6 ft) ice at a continuous speed of 3 knots (5.6 km/h; 3.5 mph).[7]

Notes

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  1. ^ Including C$14.3 million ancillary contract
  2. ^ National Shipbuilding Strategy since 2016

References

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  1. ^ a b "Working with the North, for the North". Government of Canada. Canadian Coast Guard. 19 August 2024. Retrieved 26 April 2025.
  2. ^ "The Arctic This Week Take Five: Week of 7 April, 2025". The Arctic Institute. 11 April 2025. Retrieved 26 April 2025.
  3. ^ a b c d "Government of Canada awards contract to Chantier Davie Canada Inc. for construction of new polar icebreaker". Government of Canada. 8 March 2025. Retrieved 26 April 2025.
  4. ^ a b c d e "Davie and Canadian Government Agree on Heavy Icebreaker Construction – Work to Begin at Helsinki Shipyard". Helsinki Shipyard. 8 March 2025. Retrieved 26 April 2025.
  5. ^ a b "HELSINKI 520 (1118725)". Equasis. Ministry of Ecology, Sustainable Development and Energy. Retrieved 26 April 2025.
  6. ^ a b c d "HELSINKI 520 (1118725)". Sea-web. S&P Global. Retrieved 26 April 2025.
  7. ^ a b c d "Le plus gros brise-glace du Canada en chantier au Québec" [Canada's largest icebreaker under construction in Quebec]. Le Journal de Montréal (in French). 18 March 2025. Retrieved 26 April 2025.
  8. ^ a b "Three remarkable icebreaker contracts". Aker Arctic. 12 March 2025. Retrieved 26 April 2025.
  9. ^ "PM Announces New Polar Class Icebreaker Project to be Named after Former PM John G. Diefenbaker". Government of Canada. 28 February 2008. Retrieved 26 April 2025.
  10. ^ "Results of the National Shipbuilding Procurement Strategy". Government of Canada. 19 October 2011. Retrieved 31 August 2024.
  11. ^ "Quebec's Davie Yard to Build new Canadian Icebreakers". Pacific Maritime Magazine. 1 April 2020. Retrieved 26 April 2025.
  12. ^ "Davie shipyard makes unsolicited bid to build for coast guard". CBC. 10 March 2016. Retrieved 26 April 2025.
  13. ^ "Project Resolute" (PDF). Davie Shipbuilding. Retrieved 26 April 2025.
  14. ^ "National Shipbuilding Strategy : February 2012-December 2015 status report.: P4-71/2016E-PDF". Government of Canada. July 2002. Retrieved 1 September 2024.
  15. ^ "Trudeau government moves heavy-icebreaker job out of Vancouver". CBC. 12 June 2019. Retrieved 1 September 2024.
  16. ^ "Government of Canada consults industry on polar icebreaker". Government of Canada. 28 February 2020. Retrieved 1 September 2024.
  17. ^ "Government of Canada announces Polar Icebreakers to enhance Canada's Arctic presence and provide critical services to Canadians". Government of Canada. 6 May 2021. Retrieved 1 September 2024.
  18. ^ "Canada announces next step toward adding third strategic partner under National Shipbuilding Strategy". Government of Canada. 19 December 2019. Retrieved 26 April 2025.
  19. ^ "Renewing Canada's fleets and supporting good middle-class jobs in Quebec". Prime Minister of Canada. 4 April 2023. Retrieved 26 April 2025.
  20. ^ "Construction of new polar icebreakers for the Canadian Coast Guard". Government of Canada. 8 March 2025. Retrieved 8 March 2025.
  21. ^ "Minister Duclos announces new investments in the National Shipbuilding Strategy at the Naval Quebec Annual Conference". Government of Canada. 16 September 2024. Retrieved 17 September 2024.
  22. ^ Unified Requirements for Polar Class ships Archived 2012-06-20 at the Wayback Machine. International Association of Classification Societies (IACS), April 2016. Retrieved 2024-02-16.
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