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http://dx.doi.org/10.3744/SNAK.2015.52.2.119

Verification of Equipment Number Equation Considering New Types of Ships  

Ku, Namkug (Department of Naval Architecture and Ocean Engineering, Dong-eui University)
Ha, Sol (Seoul National University Engineering Research Institute)
Lee, Kyu-Yeul (Seoul National University Engineering Research Institute)
Yang, Jin-Hyeck (Department of Naval Architecture & Ocean Engineering, Seoul National University)
Bae, Jae-Ryu (Daewoo Shipbuilding & Marine Engineering Co., LTD.)
Lee, Soo-Ho (Daewoo Shipbuilding & Marine Engineering Co., LTD.)
Publication Information
Journal of the Society of Naval Architects of Korea / v.52, no.2, 2015 , pp. 119-124 More about this Journal
Abstract
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 calculating 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.
Keywords
Equipment Number; Wind and current force; Mooring force calculation;
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