Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
권호 표지
DOI QR코드

DOI QR Code

Standards for the Use of Tugboats owing to the Increase in the Size of Ships - Focusing on the Busan New Port -

선박 대형화에 따른 예선 사용 기준에 관한 연구 - 부산 신항을 중심으로 -

  • Chang-Hyun Jung (Mokpo National Maritime University) ;
  • Chol-Seong Kim (Mokpo National Maritime University) ;
  • Yun-Sok Lee (National Korea Maritime & Ocean University) ;
  • Young-Soo Park (National Korea Maritime & Ocean University)
  • 정창현 (국립목포해양대학교 ) ;
  • 김철승 (국립목포해양대학교 ) ;
  • 이윤석 (국립한국해양대학교 ) ;
  • 박영수 (국립한국해양대학교 )
  • Received : 2024.03.13
  • Accepted : 2024.04.26
  • Published : 2024.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In 2020, 24,000 TEU ultra-large container ships began arriving at the Busan New Port. In this study, the wind pressure and hydraulic force acting on the hull were calculated to obtain the horsepower required for the tugboats for safe berthing and unberthing of a 24,000 TEU ultra-large container ship at the Busan New Port. When the wind speed is 10 m/s (20 kts), 13,000 TEU container ships meet the tug horsepower standard of the current Busan port tugboat operation rules, but 16,000 TEU and 24,000 TEU container ships do not satisfy the regulations. Therefore, it was proposed to raise the standards for tugboat use by dividing the size of ships of "G/T 150,000 tons or more," which is the largest vessel under the current tugboat use standards, into two stages. Because 140,000 tons requires 12,100 horsepower, 170,000 tons requires 14,500 horsepower, and 230,000 tons requires 18,000 horsepower, the study proposed 16,000 horsepower for 150,000 to less than 200,000 tons and 18,000 horsepower for 200,000 tons or more for the use of tugboats.

부산 신항에 2020년부터 24,000 TEU급 초대형 컨테이너선이 입항하기 시작하였다. 본 연구에서는 부산 신항을 대상으로 24,000 TEU급 초대형 컨테이너선의 안전한 접·이안을 위한 예선의 소요마력을 산출하기 위해 선체에 작용하는 풍압력과 유압력을 계산하였다. 풍속이 10m/s(20kts)일 때, 13,000 TEU 컨테이너선의 경우에는 현행 「부산항 예선 운영세칙」의 예선의 소요마력 기준을 만족하나, 16,000 TEU 및 24,000 TEU 컨테이너선의 경우에는 그 규정을 만족하지 못하는 것으로 나타났다. 따라서, 현행 예선사용 기준의 최대선박인 'G/T 15만톤 이상'의 선박 규모를 2단계로 분할하여 예선 사용기준을 상향하는 방안을 제시하였다. 14만톤은 12,100마력, 17만톤은 14,500마력, 23만톤은 18,000마력의 예선이 요구되므로, 15만톤 이상~20만톤 미만은 16,000마력, 20만톤 이상은 18,000마력으로 예선의 사용기준 개선안을 제시하였다.

Keywords

References

  1. Busan Port Tugboat Operation Regulations(2020), https://www.law.go.kr/admRulSc.do?menuId=5&subMenuId=41&tabMenuId=183&query=%EC%98%88%EC%84%A0%EC%9A%B4%EC%98%81%EC%84%B8%EC%B9%99#liBgcolor5 (Accessed 05 March 2024). 
  2. Hughes, G.(1930), Model Experiments on the Wind Resistance of Ships, Transactions of the Institute of Naval Architects, Vol. 72. 
  3. Inoue, K.(2013), Theory and Practice of Ship Handling, Sanghakdang, p. 149-197. 
  4. Jung, C. H., C. S. Kim, and Y. S. Park(2023), A study on the horsepower requirements of tugboats according to the ultra-large container ships at Busan New Port, Journal of the Korean Society of Marine Evironment & Safety, Fall Academic Conference, p. 59. 
  5. Kim, S. Y. and Y. S. Lee(2018), A Study on the Proper Crown Height of GT 100,000Ton Cruise ship and DWT 100,000Ton Container ship, Journal of the Korean Society of Marine Environment & Safety Research Paper, Vol. 24, No. 2, pp. 157-162. 
  6. Kim, C. H., Y. S. Park, and D. W. Kim(2020), A Study on the Safety Measure for Mega Container Ships Calling at Busan New Port from the Perspective of Pilotage, Journal of Navigation and Port Research, Vol. 44, No. 3, pp. 174-180. 
  7. Korea Maritime Pilots' Association(KMPA)(2008), Pilotage Discussion, 2008 New Year's Issue, pp. 20-21. 
  8. List of largest container ships, https://en.wikipedia.org/wiki/List_of_largest_container_ships (Accessed 05 March 2024). 
  9. Ministry of Oceans and Fisheries(2020), Harbor and Fishery Design Criteria, pp. 17-20. 
  10. OCIMF(2008), Mooring Equipment Guidelines 3rd Edition, Witherby Seamanship International, pp. 179-196. 
  11. The Nautical Institute(2003), Tug Use in Port, 2nd edition, pp. 30-31. 
  12. Tugboat ownership status of Busan branch, http://busantug.kr/sub02/sub02_01.php (Accessed 05 March 2024).