The impact of propulsion factors on vessel performance in waves

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This paper investigates the effect of varying propulsion factors (wake fraction, thrust deduction, relative rotative efficiency) due to waves on overall vessel performance. Four different ships have been considered where experimental values of propulsion factors in waves are available. Simulations have been performed for a realistic transpacific journey to compute variation in propulsion factors and efficiencies due to waves in realistic operating conditions. The predicted energy consumption was found to vary from -12% to +4% as a result of changes in propulsion factors due to waves. The propulsion efficiency is significantly affected in the presence of waves so it is important to include the effect of changes in propulsion factors, especially thrust deduction and wake fraction, for accurate vessel performance prediction.
Original languageEnglish
Publication date2019
Number of pages8
Publication statusPublished - 2019
EventSixth International Symposium on Marine Propulsors (smp'19) - Roma Centro Hotel, Rome, Italy
Duration: 26 May 201930 May 2019

Conference

ConferenceSixth International Symposium on Marine Propulsors (smp'19)
LocationRoma Centro Hotel
CountryItaly
CityRome
Period26/05/201930/05/2019

    Research areas

  • Vessel performance, Propulsion inwaves, Varying propulsion factors

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