평수구역을 운항하는 카페리선박의 차량고박 기준에 관한 연구 = A Study on the Lashing Standards for Car Ferry Ships Sailing in the Coastal Sea Area

다국어 초록 (Multilingual Abstract)

The importance of cargo lashing has been raised after passenger ship sinking accidents due to failure of vehicle and cargo lashing and transshipment of cargo due to rolling.
Accordingly, the code of equipment and structure of car ferries has been strengthened that all vehicles loaded on the car ferry that operate only in the smooth sea area, whose voyage time is less than 30 minutes and operate in the smooth or costal sea area, whose voyage time is less than 1 hour must be secured on the state of sea over 7m/s wind speed and/or over 1.5m wave height. Currently, the relevant contents have been changed to the code of cargo loading and securing, etc., on 2nd January 2015 and the systematic process for verifying the validity of securing is described according to the Annex 1, Standards for Cargo Stowage and Securing, Etc.
Since this code accepted the contents of the IMO CSS(Code of Safe Practice for Cargo Stowage and Securing) and applies the external force acting on ocean sailing vessels, it is considered to be practically unreasonable to apply it to ships sailing in the domestic coastal sea area. This is because ships sailing in the coastal sea area exhibit relatively smaller hull motion than ships sailing in the ocean due to the geographical characteristics of the coastal sea area.
Therefore, in this study, the hull motion of a ferry passenger ship that is not enclosed in a vehicle area sailing in the coastal sea area was measured and after comparing and analyzing the result of the hull motion calculation program(NSM), the external force according to rolling & pitching was applied to the vehicle loaded on the ship.
Examining the lashing standards for car ferry ships sailing in the coastal sea area by comparing the external force with the bearing capacity that the vehicle can withstand without securing, it was found that loaded vehicles did not slip or tip over on the state of sea over 7m/s wind speed, 1.5m wave height and also, it is considered that the current lashing standards could relax after further study.

목차 (Table of Contents)

• Abstract
• 제1장 서 론 1
• 1.1 연구의 배경 및 목적 1
• 1.2 연구 방법 및 구성 3
• 제2장 차량고박 기준 및 선행 연구 5
• 2.1 차량고박 기준 5
• 2.2 선행연구 9
• 2.2.1 선체운동에 따른 외력 산정법 9
• 2.2.2 선체가속도 기준 분석 11
• 2.2.3 DNV·GL 선급규정에 따른 외력계산 14
• 2.2.4 비표준화 화물 고박 방법 16
• 제3장 선체운동 평가 17
• 3.1 연안여객선 현황 및 대상선박 선정 17
• 3.1.1 연안여객선 현황 17
• 3.1.2 대상선박 및 항로 선정 20
• 3.2 선체운동 실선 계측 23
• 3.2.1 IMU를 이용한 선체운동 계측 23
• 3.2.2 선체운동 계측 기상조건 25
• 3.2.3 선체운동 계측 결과 27
• 3.3 NSM을 이용한 선체운동 계산 35
• 3.3.1 NSM을 이용한 선체운동 계산 35
• 3.3.2 선체운동 계산 결과 37
• 3.4 선체운동 평가 47
• 제4장 차량에 작용하는 외력과 지지력 평가 50
• 4.1 선체운동에 따른 차량에 작용하는 외력 50
• 4.1.1 선체 종방향과 횡방향 방향 외력 50
• 4.1.2 선체 종방향 축에 대한 전도모멘트 55
• 4.2 외력에 대한 지지력 56
• 4.2.1 선체 종방향과 횡방향 방향 외력에 대한 지지력 56
• 4.2.2 전도모멘트에 대한 저항모멘트 57
• 4.3 차량에 작용하는 외력과 지지력 평가 57
• 제5장 결 론 70
• 참고문헌 73
• 부록 75