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A Study on Estimation of Allowable Wave Height for Loading and Unloading of the Ship Considering Ship Motion
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 Title & Authors
A Study on Estimation of Allowable Wave Height for Loading and Unloading of the Ship Considering Ship Motion
Kwak, Moon Su; Moon, Yong Ho;
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 Abstract
This study proposed an estimation method of allowable wave height for loading and unloading of the ship considering ship motion that is affected by ship sizes, mooring conditions, wave periods and directions. The method was examined validity by comparison with wave field data at pier in Pohang new harbor. The wave field data obtained with wave height of 0.10~0.75m and wave period of 7~13s in ship sizes of 800~35,000ton when a downtimes have occurred. On the other hand, the results of allowable wave height for loading and unloading of the ship in this method have obtained with wave heights of 0.19~0.50m and wave periods of 8~12s for ship sizes of 5,000, 10,000 and 30,000ton. Thus this method well reproduced the field data respond to various a ship sizes and wave periods. And the results of this method tended to decrease in 16~62% when have considered long wave, and it is decreased in 0~46% when didn't consider long wave than design standards in case of the ship sizes of 5,000~30,000ton, wave period of 12s and wave angle of . The allowable wave heights for loading and unloading of the ship proposed by design standards are didn't respond to various the ship sizes and wave periods, and we have found that the design standards has overestimated on smaller than 10,000ton.
 Keywords
Allowable wave height for loading and unloading of ship;Oscillation quantity of moored ship;Long period wave;Pohang New Harbor;Computer simulation;
 Language
Korean
 Cited by
1.
A Study to Improve the Operation Criteria by Size of Ship in Ulsan Tank Terminal, Journal of the Korean Society of Marine Environment and Safety, 2016, 22, 6, 639  crossref(new windwow)
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