Highlights 50,000 noon reports from 88 tankers analysed to assess speed-power relationship Data-driven model combining principles from naval architecture and econometrics Speed-power exponent is significantly lower than 3 at speeds below the design speed Environmental effect of slow steaming is overestimated Imparts attention to speed optimization and not reduction for reducing CO2 emissions
Abstract This study investigates the speed-power relationship of ships, and is based on a combined econometric and naval architectural data-driven model fed with operational data from more than 50,000 noon reports obtained from 88 tankers. It is shown that the speed-power exponent is significantly lower than 3 at speed intervals below the design speed. This finding, including the study itself, affects the environmental discussions related to slow steaming, since it implies that slow steaming will not be as good as often stated. As such, the study imparts attention to speed optimisation, rather than reduction, in the political and environmental debate focused on the reduction of carbon emissions from shipping.
Prediction of ships’ speed-power relationship at speed intervals below the design speed
2021-01-01
Article (Journal)
Electronic Resource
English
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