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Advantages of twin rudder system with asymmetric wing section aside a propeller

Lookup NU author(s): Dr Noriyuki Sasaki, Professor Mehmet Atlar


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This study presents a new twin rudder system with asymmetric wing section, aside a propeller, as a new category energy saving device (ESD) for ships. The energy saving principle of the new ESD, which is called "Gate rudder", is described and its applicability on a large bulk carrier is explored using experimental and numerical methods. The study makes emphasis on the cost-effectiveness of the proposed ESD and presents a potential energy saving up to 7-8 % with the new device as well as an attractive return investment in 0.37-0.9 year. These estimations are based on the conventional powering methods, whereas the accuracy of the ESD design method is confirmed by model test measurements.

Publication metadata

Author(s): Sasaki N, Atlar M, Kuribayashi S

Publication type: Article

Publication status: Published

Journal: Journal of Marine Science and Technology

Year: 2016

Volume: 21

Issue: 2

Pages: 297-308

Print publication date: 01/06/2016

Online publication date: 29/12/2015

Acceptance date: 28/10/2015

Date deposited: 29/06/2016

ISSN (print): 0948-4280

ISSN (electronic): 1437-8213

Publisher: Springer Japan


DOI: 10.1007/s00773-015-0352-z


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