The energy efficiency effects of periodic ship hull cleaning

Roar Adland, Pierre Cariou, Haiying Jia and François-Charles Wolff
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Roar Adland: NHH - Norwegian School of Economics and Business Administration, Department of Economics - Norwegian School of Economics and Business Administration
Pierre Cariou: Kedge Business School [Talence]

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Abstract: This paper investigates the impact of periodic hull cleaning on oil tankers' energy efficiency using real 2012–2016 fleet performance and weather data extracted from noon reports for a fleet of eight identical Aframax-size crude oil tankers. The impact of changes in fuel consumption is estimated around the discontinuity when a vessel is cleaned and rely on both before-after and difference-in-differences estimators. The main results show that (i) periodic hull cleaning leads to a significant reduction in the daily fuel consumption; (ii) dry-docking leads to greater and significantly different reductions in fuel consumption than underwater hull cleaning, approximately −17% versus −9%; (iii) hull cleaning energy efficiency effect is greater when the vessel is sailing laden rather than in the ballast condition. These findings represent a key building block for the optimization of maintenance intervals.

Date: 2018-03
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Citations: View citations in EconPapers (6)

Published in Journal of Cleaner Production, 2018, 178, pp.1-13. ⟨10.1016/j.jclepro.2017.12.247⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-03732129

DOI: 10.1016/j.jclepro.2017.12.247

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