Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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A Study on Soft-Mooring Model Test Techniques for the Evaluation of Added Resistance on Ships

선박의 부가저항 평가를 위한 소프트 계류 모형시험 기법 연구

  • Min-Guk Seo (Korea Research Institute of Ships & Ocean Engineering) ;
  • In Bo Park (Korea Research Institute of Ships & Ocean Engineering) ;
  • Dong-Min Park (Korea Research Institute of Ships & Ocean Engineering) ;
  • Seunghyun Hwang (Korea Research Institute of Ships & Ocean Engineering)
  • 서민국 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박인보 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박동민 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 황승현 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2023.06.23
  • Accepted : 2023.08.01
  • Published : 2023.10.20
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Abstract

In this study, a model test was conducted using the soft-mooring technique to evaluate the added resistance of the ship in waves. The study also examined the specific factors that should be considered during the soft-mooring test. The main purpose of soft-mooring is to prevent drifting caused by waves by providing horizontal restoring forces. However, it can also create undesired restoring forces in the vertical direction. Therefore, we examined the restoring force of the ship's 6-DOF motion based on the arrangement of the soft-mooring and the height of the mooring connection point. We also checked the corresponding resonance period and drift distance. The soft-mooring test was conducted twice, once with self-propulsion and once without self-propulsion, allowing us to review the advantages and disadvantages of each test technique. The main parameters measured in these model tests were 6DOF motion and added resistance on the ship. We compared these measurements obtained from two different techniques (with and without self-propulsion). Additionally, we also compared the measurements based on the types of measuring sensors used (2D load cells on FP, AP, and 1D load cells on each mooring line) as well as the height of the mooring connection point.

Keywords

Acknowledgement

본 논문은 해양수산부 재원으로 선박해양플랜트연구소의 주요 사업인 "극한환경 상태의 평가기술개발"에 의해 수행되었습니다.(1525014865, PES4730)

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