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EXPERIMENTAL STUDY ON SHIP MOTIONS WHILE TOWING A TRAWL NET

Kiyoshi AMAGAI

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Abstract

Many studies on fishing vessel safety do not take into account the fact that fishing operations involve a vessel's being connected to its gear. The author addresses the consequent need to analyze the dynamic relationship between vessel and gear, performing model tests simulating trawl fishing by a stern trawler in several sea states. Using the data obtained, the relationship between ship motions and warp tension while towing a trawling net was identified by the use of statistical methods. These motions were found to be different from motions without a net in tow.

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What this paper is about

Many studies on fishing vessel safety do not take into account the fact that fishing operations involve a vessel's being connected to its gear. The author addresses the consequent need to analyze the dynamic relationship between vessel and gear, performing model tests simulating trawl fishing by a stern trawler in several sea states. Using the data obtained, the relationship between ship motions and warp tension while towing a trawling net was identified by the use of statistical methods. These motions were found to be different from motions without a net in tow.

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Available abstract

Many studies on fishing vessel safety do not take into account the fact that fishing operations involve a vessel's being connected to its gear. The author addresses the consequent need to analyze the dynamic relationship between vessel and gear, performing model tests simulating trawl fishing by a stern trawler in several sea states. Using the data obtained, the relationship between ship motions and warp tension while towing a trawling net was identified by the use of statistical methods. These motions were found to be different from motions without a net in tow.

Key concepts: Towing, Trawling, Marine engineering, Fishing, Stern, Ship motions, Hull, Engineering

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