Abstract
ABSTRACT Due to the International Maritime Organization's (IMO) mandatory standards for Energy Efficiency Design Index (EEDI) and Energy Efficiency Existing Ship Index (EEXI) for new and existing ships, there is serious concern about lowering carbon emissions from ships in order to have a sustainable environment. A number of energy-saving technologies are used on ships to improve their efficiency and decrease fuel consumption. Hull vane is a fixed foil placed to the stern of a vessel to enhance local pressure by modifying the stern flow. This study examines the effects of retrofitting a hull vane to a high-speed displacement vessel at a 1:35 scale with various locations in X and Z directions from the transom of the vessel. The simulated resistance and trim values for the bare hull were validated with experimental results which are conducted in towing tank facility available in the Department of Ocean Engineering, Indian Institute of Technology Madras. The coefficient of residuary resistance value has been reduced by 21% at the HV5 location. Furthermore, the wave pattern behind the transom for the HV5 position was studied and reported at the operating Froude number.
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