Effects of ship form on the brauching-to phenomenon of small fishing vessels
1990
Kimura, N. (Hokkaido Univ., Hakodate (Japan). Faculty of Fisheries) | Takahashi, S. | Amagai, K.
In order to identify the effect of vessel hull-shape on the brauching-to phenomena of small fishing vessels, captive model tests were conducted on the following wave conditions by using several ship models with different ship forms. From investigations into the actual condition of fishing vessel on southern Hokkaido, ship models having three bow forms and six stern forms are considered. The standard bow form is represented by the 9.9 GT type of fishing vessels which are usually used in Funka-Bay, Hokkaido. One shape is relatively fine, and one is relatively full. Regarding stern form, three types have recess for the rudder and propeller and used a configuration that changed the volume of this portion but without changing its form. The other three model types changed both the slope and fineness of the vessel hull-shape. In this paper, based on measurements of the wave exciting sway force and yaw moment, the authors discuss the relationship between ship hull-form and the development of yaw motions
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