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http://dx.doi.org/10.1016/j.ijnaoe.2016.05.004

Application of fin system to reduce pitch motion  

Reguram, B. Rajesh (Department of Ocean Engineering, Indian Institute of Technology Madras)
Surendran, S. (Department of Ocean Engineering, Indian Institute of Technology Madras)
Lee, Seung Keon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.8, no.4, 2016 , pp. 409-421 More about this Journal
Abstract
Container ships are prone to move at a greater speed compared to other merchant ships. The slenderness of the hull of container vessel is for better speed, but it leads to unfavorable motions. The pitch and roll are related and sometimes the vessel might be forced to parametric roll condition which is very dangerous. A fin attached to the ship hull proves to be more efficient in controlling the pitch. The fin is fitted at a lowest possible location of the hull surface and it is at the bow part of the ship. Simulations are done using proven software package ANSYS AQWA and the results are compared. Simulations are done for both regular and irregular seas and the effect of fin on ship motion is studied. P-M spectrum is considered for various sea states.
Keywords
Parametric roll; Pitch control; Fin systems; Sea states; Irregular sea;
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