Ji Di Explained

Ji Di is a Chinese icebreaking research vessel built in 2024 for the State Oceanic Administration North Sea Branch.

, 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 89.95m (295.11feet) long overall and has a beam of 17.8m (58.4feet) and draft of 5.5m (18feet). The 5600t vessel has accommodation for 60 persons, operational range of, and can remain at sea for 80 days.[1] [2]

Ji Di has a diesel-electric propulsion system with four main diesel generators and two 3.2MW ABB Azipod azimuth thrusters.[3] The ship's speed in open water is and it can break 1m (03feet) level ice at a speed of 1.5to.[4] [5]

Ji Di is built to Polar Class 6,[6] the second-lowest ice class defined in the International Association of Classification Societies (IACS) Unified Requirements for Polar Class Ships, which is intended for summer and autumn operation in medium first-year ice between in thickness that may contain small inclusions of old sea ice that has survived at least one summer without melting completely.[7] [8]

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. It was floated out on 29 December 2023 and completed on 22 May 2024.

Ji Di, Chinese for "polar", entered service with the State Oceanic Administration North Sea Branch on 24 June 2024.[9]

Notes and References

  1. Web site: 自然资源部北海局投资建造!5600吨"极地"号破冰科考船出坞. zh. 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. 29 December 2023. 24 April 2024.
  2. Web site: "极地"号破冰科考船今天将首次亮相 "定妆照"抢鲜看. zh. The ice-breaking scientific research vessel "Polar" will make its debut today in "fixed photos" for a sneak peek. CNWEST.COM. 29 December 2023. 24 April 2024.
  3. Web site: Kiina rakentaa jo neljättä jäänmurtajaansa Guangzhoun telakalla. fi. Navigator Magazine. 4 January 2024. 24 April 2024.
  4. lylegoldstein. 1758339365736992857. New Chinese icebreaker being built in Guangdong. Jianchuan Zhishi-China, 3.2024..
  5. Web site: The Surveyor Revealed the "Identity" Information of the Ship in an Interview with CCTV. China Classification Society. 22 January 2024. 24 April 2024.
  6. Web site: Polar Research Vessel: China Races Ahead With 4th Icebreaker ‘Ji Di’; India Bets On Russia For Joint Venture. 27 June 2024. 1 July 2024. The EurAsian Times.
  7. https://iacs.s3.af-south-1.amazonaws.com/wp-content/uploads/2022/02/12082657/uri-1.pdf Unified Requirements for Polar Class ships
  8. Web site: World Meteorological Organization. Guide to meteorological instruments and methods of observation: Sea Ice Nomenclature, 7th ed. . 12–13. 1 July 2024.
  9. Web site: “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. 24 June 2024. 观察者. 24 June 2024.