Verification of Equipment Number Equation Considering New Types of Ships
선종 변화를 고려한 의장수 계산식의 적합성 검증

Namkug Ku, Sol Ha, Kyu-Yeul Lee, Jin-Hyeck Yang, Jae-Ryu Bae, Soo-Ho Lee
2015 Journal of the Society of Naval Architects of Korea  
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The purpose of this research is a verification of the current equation for calculating equipment number and a suggesting a method for development of a rational new equation. The equation for
more » ... lating equipment number consists of total surface area of a ship that fluid resistance act on. Equipment number determines the specification of anchoring and mooring equipment such as anchor weight, anchor chains length and diameter, the number, length and breaking load of tow lines and mooring lines. The equation for equipment number calculation is basically derived considering x, y components of a wind and current force acting on a ship. But this equation is only based on a tanker, which was main type of ships when the equation was derived. Therefore, verification of the equation is required for other types of ships, such as container carrier, LNG carrier, etc. Therefore, in this research, we find out the equation for equipment number calculation should be revised for other types of ships especially the container carrier, by comparing wind and current force acting on a ship to holding force of an anchor and anchor chains, which are selected based on the equipment number.
doi:10.3744/snak.2015.52.2.119 fatcat:egdnxgwkpbaupjpfsmpnrersqq