• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Safety and Navigability Assessment of Ice Navigation in the Sea of Okhotsk

Research Project

Project/Area Number 22K04548
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionHokkaido University

Principal Investigator

Uto Shotaro  北海道大学, 北極域研究センター, 特任教授 (40358396)

Co-Investigator(Kenkyū-buntansha) 泉山 耕  北海道大学, 北極域研究センター, 研究員 (40358403)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords氷海航行 / オホーツク海 / 航行安全 / 可航性 / 航行限界 / 海氷 / 可航性評価 / 船体抵抗 / 所要馬力 / POLARIS / 氷海船舶 / 航行安全性 / 氷抵抗 / 氷中出力 / 運航管理
Outline of Research at the Start

流氷期オホーツク海を対象として、2段階のアプローチにより航行限界を評価する手法を提案する。はじめに北極海向けに提案されたPOLARISのオホーツク海への適用性を検討し、安全性の観点から航行の可否を評価可能なシステムを提案する。可航性評価には船型及び氷況情報を入力として、船体に働く抵抗及び所要出力を推定するシステムを開発し、その精度及び適用範囲をオホーツク海における実船実験の結果を用いて総合的に検証する。これらの評価手法を用いることによって、安全性及び可航性を満足する航行限界を評価することが可能となり、流氷期オホーツク海における航行安全性の向上及び将来の適切な運航管理に貢献する。

Outline of Final Research Achievements

The navigability limit of a ship in ice waters is defined by the structural safety of the ship due to its hull strength and the operational performance limit (hereinafter referred to as “navigability”) determined by the hull form and the output of the main engine onboard. For the former, the International Maritime Organization (IMO) has already proposed a risk assessment method for ships in the Arctic Ocean (POLARIS).
In this study, we developed a method for estimating the resistance and required power acting on a ship navigating in ice-covered waters, and verified its accuracy and applicability using the results of actual ship experiments in the Sea of Okhotsk. Based on this method, an evaluation system for propulsion performance limits was proposed, and a framework for evaluating the navigability limits of ships was proposed in combination with IMO POLARIS.

Academic Significance and Societal Importance of the Research Achievements

近年、地球規模の環境変動に伴って北極海の海氷勢力が減退していることは良く知られている。オホーツク海の海氷も近年、減少傾向にあり、その流氷期における船舶交通量は限られているものの、今後の海氷勢力の変化によっては増加することも考えられる。また現在はごく一部の海域を除き行われていない流氷期の漁業活動も今後拡大する可能性がある。
本研究で提案された船舶の航行限界評価のための枠組みは氷海域における船舶の安全且つ効率的な運航をサポートするものであり、将来の船舶運航の拡大に伴う海難事故の発生及び油流出等による環境被害を未然に防ぐことに資することができる。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (14 results)

All 2025 2024 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results)

  • [Journal Article] Formulation and validation of resistance prediction scheme for ships in ice regime described in WMO egg code2024

    • Author(s)
      Shotaro Uto, Takatoshi Matsuzawa, Haruhito Shimoda, Daisuke Wako, Takenobu Toyota
    • Journal Title

      Cold Regions Science and Technology

      Volume: 221 Pages: 1-15

    • DOI

      10.1016/j.coldregions.2024.104159

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Framework and trial calculations of navigability assessment pf ships in ice waters2025

    • Author(s)
      Shotaro Uto, Natsuhiko Otsuka
    • Organizer
      39th International Symposium on Okhotsk Sea and Polar Oceans
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北極航路航行船舶の可航性評価手法の提案2024

    • Author(s)
      宇都正太郎, 大塚夏彦
    • Organizer
      日本船舶海洋工学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Validation of powering method of ships in ice using Satellite AIS information2024

    • Author(s)
      Shotaro Uto, Natsuhiko Otsuka
    • Organizer
      27th IAHR International Symposium on Ice
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Feasibility and perspective of the Arctic shipping, today and future- - Navigability perspective -2024

    • Author(s)
      Shotaro Uto
    • Organizer
      第38回北方圏国際シンポジウム「オホーツク海と流氷」2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] A New Framework of Navigability Assessment of Ships in Arctic Shipping Routes2024

    • Author(s)
      Shotaro Uto, Natsuhiko Otsuka
    • Organizer
      Arctic Frontiers 2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Navigability assessment of ships in ice using ice chart information2023

    • Author(s)
      Shotaro Uto, Takatoshi Matsuzawa, Koh Izumiyama, Natsuhiko Otsuka
    • Organizer
      23rd International Symposium on Port and Ocean Engineering Under Arctic Conditions
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] ITTC Direct Power Methodに準拠した氷海船舶の推進出力推定法2023

    • Author(s)
      宇都正太郎, 松沢孝俊
    • Organizer
      日本船舶海洋工学会講演会論文集
    • Related Report
      2023 Research-status Report
  • [Presentation] 船舶の氷中抵抗推定におけるIce chartの適用 第3報 耐氷船舶の速力・出力解析2023

    • Author(s)
      宇都正太郎、大塚夏彦
    • Organizer
      第39回寒地技術シンポジウム
    • Related Report
      2023 Research-status Report
  • [Presentation] Preliminary Study of the Powering Method for Ships in Ice using WMO Egg Code Information2023

    • Author(s)
      Shotaro Uto
    • Organizer
      The 37th International Symposium on the Okhotsk Sea & Polar Oceans 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Engineering Challenge toward Sustainable Use of Arctic Sea Route2023

    • Author(s)
      Shotaro Uto
    • Organizer
      Seventh International Symposium on Arctic Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] カメラ-LiDARフュージョンセンサの海氷観測への適用性に関する予備的検証2022

    • Author(s)
      宇都正太郎,泉山耕,岡田浩希,髙山喜央,案浦雅徳
    • Organizer
      雪氷研究大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 船舶の氷中抵抗推定におけるIce chartの適用 第2報 Ice chart情報の信頼性について2022

    • Author(s)
      宇都正太郎,泉史郎,松沢孝俊
    • Organizer
      第38回寒地技術シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] Potential and Sustainability of International Transportation on the Northern Sea Route2022

    • Author(s)
      Natsuhiko Otsuka, Shotaro Uto
    • Organizer
      The 11th International Arctic Shipping Seminar
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2022-04-19   Modified: 2026-01-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi