Ji Di

Ji Di (simplified Chinese: 极地; traditional Chinese: 極地; lit. 'Polar') is a Chinese icebreaking research vessel built in 2024 for the State Oceanic Administration North Sea Branch.

This article is about State Oceanic Administration North Sea Branch research vessel. For similarly-named research vessel operated by the Sun Yat-sen University, see Zhong Shan Da Xue Ji Di.
History
China
NameJi Di
OperatorState Oceanic Administration North Sea Branch
BuilderGuangzhou Shipyard International (Guangzhou, China)
Yard number21110017
Launched29 December 2023
Completed24 June 2024[1]
IdentificationIMO number: 9970351[2][3]
StatusIn service
General characteristics
TypeResearch vessel
Tonnage
Displacement5,600 t (5,500 long tons)
Length89 m (292 ft)
Beam17.8 m (58 ft)
Draft5.9 m (19 ft)
Ice classPolar Class 6
Installed powerFour main diesel generators
PropulsionDiesel-electric; two ABB Azipod units (2 × 3.2 MW)
Speed14 knots (26 km/h; 16 mph)
Range14,000 nautical miles (26,000 km; 16,000 mi)
Endurance80 days
Crew60

As of 2024, Guangzhou Shipyard International is building a slightly bigger Polar Class 4 research vessel, Tan Suo San Hao, at the same time.

Design

Ji Di is 89 metres (292 ft) long overall and has a beam of 17.8 metres (58 ft) and draft of 5.9 metres (19 ft). The 5,600-tonne (5,500-long-ton) vessel has accommodation for 60 persons, operational range of 14,000 nautical miles (26,000 km; 16,000 mi), and can remain at sea for 80 days.[4][5]

Ji Di has a diesel-electric propulsion system with four main diesel generators and two 3.2-megawatt (4,300 hp) ABB Azipod azimuth thrusters.[2][6] The ship's speed in open water is 14 knots (26 km/h; 16 mph) and it can break 1-metre (3.3 ft) level ice at a speed of 1.5 to 2 knots (2.8 to 3.7 km/h; 1.7 to 2.3 mph).[7][8]

Ji Di is built to Polar Class 6,[2] an ice class intended for summer and autumn operation in medium first-year ice which may contain small inclusions of old sea ice that has survived at least one melting season without melting completely.[9]

History

The ship's construction was awarded to Guangzhou Shipyard International, a subsidiary of the China State Shipbuilding Corporation, in March 2022 and the construction began shortly afterwards.[2] It was floated out on 29 December 2023[4][5] and delivered on 24 June 2024.[1]

Ji Di, Chinese for "polar", will operate under the State Oceanic Administration North Sea Branch.[2]

References
  1. ""极地"号破冰调查船今天在广州命名交付" [The "Polar" icebreaker survey ship was named and delivered in Guangzhou today]. 观察者. 24 June 2024. Retrieved 24 June 2024.
  2. "Ji Di (9970351)". Sea-web. S&P Global. Retrieved 24 April 2024.
  3. "Ji Di (9970351)". Equasis. Ministry of Ecology, Sustainable Development and Energy. Retrieved 24 April 2024.
  4. "自然资源部北海局投资建造！5600吨"极地"号破冰科考船出坞" [The Beihai Bureau of the Ministry of Natural Resources invested in and built it! The 5,600-ton icebreaking scientific research vessel "Polar" undocking]. dailyqd.com (in Chinese). 29 December 2023. Retrieved 24 April 2024.
  5. ""极地"号破冰科考船今天将首次亮相 "定妆照"抢鲜看" [The ice-breaking scientific research vessel "Polar" will make its debut today in "fixed photos" for a sneak peek]. CNWEST.COM (in Chinese). 29 December 2023. Retrieved 24 April 2024.
  6. "Kiina rakentaa jo neljättä jäänmurtajaansa Guangzhoun telakalla". Navigator Magazine (in Finnish). 4 January 2024. Retrieved 24 April 2024.
  7. @lylegoldstein (February 16, 2024). "New Chinese icebreaker being built in Guangdong. Jianchuan Zhishi-China, 3.2024" (Tweet) – via Twitter.
  8. "The Surveyor Revealed the "Identity" Information of the Ship in an Interview with CCTV". China Classification Society. 22 January 2024. Retrieved 24 April 2024.
  9. 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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