Advantages of twin rudder system with asymmetric wing section aside a propeller: the new hull form with twin rudders utilizing duct effects

Noriyuki Sasaki; Mehmet Atlar; Sadotomo Kuribayashi

doi:10.1007/s00773-015-0352-z

Advantages of twin rudder system with asymmetric wing section aside a propeller: the new hull form with twin rudders utilizing duct effects

Noriyuki Sasaki, Mehmet Atlar, Sadotomo Kuribayashi

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

99 Downloads (Pure)

Abstract

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.

Original language	English
Pages (from-to)	297-308
Number of pages	12
Journal	Journal of Marine Science and Technology
Volume	21
Issue number	2
Early online date	29 Dec 2015
DOIs	https://doi.org/10.1007/s00773-015-0352-z
Publication status	Published - 30 Jun 2016

Keywords

twin rudder
gate rudder
duct effect
ESD
maneuverability
energy saving devices
bulk carrier
cost-effectiveness
conventional powering methods

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10.1007/s00773-015-0352-zLicence: CC BY 4.0

Sasaki-etal-JMST2016-Advantages-of-twin-rudder-system-with-asymmetric-wing-sectionFinal published version, 2 MBLicence: CC BY 4.0

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Mehmet Atlar
- mehmet.atlar@strath.ac.uk
- Naval Architecture, Ocean And Marine Engineering - Professor
- Ocean, Air and Space
Person: Academic

Cite this

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title = "Advantages of twin rudder system with asymmetric wing section aside a propeller: the new hull form with twin rudders utilizing duct effects",

abstract = "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.",

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AU - Kuribayashi, Sadotomo

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AB - 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.

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