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dc.contributor.authorBorén Altés, Clara
dc.contributor.authorGrifoll Colls, Manel
dc.contributor.authorCastells Sanabra, Marcel·la
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria Nàutiques
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2024-04-09T10:16:03Z
dc.date.available2024-04-09T10:16:03Z
dc.date.issued2023-10-01
dc.identifier.citationBoren, C.; Grifoll, M.; Castells-Sanabra, M. Emissions assessment of container ships sailing under off-design conditions. "Journal of marine science and engineering", 1 Octubre 2023, vol. 11, núm. 10, Article 1983.
dc.identifier.issn2077-1312
dc.identifier.urihttp://hdl.handle.net/2117/406158
dc.description.abstractMaritime transportation is the prevalent mode of transport for overseas freight, and it is frequently recognised as a relatively environmentally sustainable means of transport. However, shipping is still a substantial source of greenhouse gas emissions. We investigate the effect on fuel consumption and emissions when container ships are sailing below the design speed (i.e., slow steaming) as a strategy to minimise fuel consumption and costs. The estimation of ship fuel oil consumption is commonly based on the cubic speed¿power relation as a bottom-up approach. Nevertheless, the cubic relation could overestimate the impact of slow steaming on fuel consumption reduction and the emissions assessment. We compare real fuel consumption data and the consequent emissions with the results of assessing these parameters with the mentioned bottom-up approach. The analysis uses a set of container-ship slow steaming voyages, and the assessment is supported by speeds obtained from the Automatic Identification System (AIS). The exponential values obtained for the speed¿power relation range between 3.1 and 3.5, finding an overrating over 20% in all the cases analysed. Finally, we use a weather ship routing optimisation software to investigate additional emissions savings in the framework of ship-specific measures when weather ship routing and slow steaming are applied simultaneously.
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectÀrees temàtiques de la UPC::Nàutica::Impacte ambiental
dc.subject.lcshMarine pollution
dc.subject.otherSlow steaming
dc.subject.otherFuel consumption
dc.subject.otherShipping emissions
dc.subject.otherSpeed–power relation
dc.subject.otherWeather ship routing
dc.titleEmissions assessment of container ships sailing under off-design conditions
dc.typeArticle
dc.subject.lemacNavegació--Aspectes ambientals
dc.subject.lemacVaixells--Contaminació
dc.subject.lemacTransport marítim--Aspectes ambientals
dc.contributor.groupUniversitat Politècnica de Catalunya. CREMIT - Centre de Recerca de Motors i Instal·lacions Tèrmiques
dc.contributor.groupUniversitat Politècnica de Catalunya. BIT - Barcelona Innovative Transportation
dc.identifier.doi10.3390/jmse11101983
dc.relation.publisherversionhttps://www.mdpi.com/2077-1312/11/10/1983
dc.rights.accessOpen Access
local.identifier.drac37748718
dc.description.versionPostprint (published version)
local.citation.authorBoren, C.; Grifoll, M.; Castells-Sanabra, Marcella
local.citation.publicationNameJournal of marine science and engineering
local.citation.volume11
local.citation.number10, Article 1983


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