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http://dx.doi.org/10.5394/KINPR.2020.44.4.275

A Study on Securing a Stable GM for Each Ship Type Considering the Ship's Operating Status  

Kim, Hong-Beom (Korea Institute of Maritime and Fisheries Technology)
Kim, Jong-Kwan (Korea Institute of Maritime and Fisheries Technology)
Lee, Yun-Sok (Department of Ship Operation, Korea Maritime & Ocean University)
Publication Information
Journal of Navigation and Port Research / v.44, no.4, 2020 , pp. 275-282 More about this Journal
Abstract
Recently, the occurrence of a ship capsizing was analyzed as the main cause of the lack of stability or loss because of the improper management of the center of gravity, the movement of cargo or heavy weight when excessive steering occurs or when navigating during bad weather. Thus, to prevent a ship from capsizing, it is necessary to secure stability to enable the ship's return to its upright position, even if a dangerous heel occurs. The GM is a crucial evaluation factor regarding stability, which the navigation officer uses to preserve stability. In this study, based on the stability data collected from the operating of ships for five years, The GM by ship's type according to the operating status was analyzed specifically such as a ship's length, breadth, and gross tonnage. The feature of the GM distribution according to a ship's length was confirmed, and after performing the correlation analysis between the breadth and the GM, the ratio of the GM to breadth was calculated, and the result was compared with the previous ratio. Additionally, a simple approximation formula and minimum GM for the estimation of the GM by ship type were proposed by the regression analysis of the GM using the gross tonnage (GT)/breadth (B) to reflect the trend of larger ships being built. The results of this study are expected to be used as data for the review of securing a stable GM on ships.
Keywords
capsizing accident; stability; GM; loading condition; type of ship;
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Times Cited By KSCI : 2  (Citation Analysis)
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