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.
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 |
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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 | |
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