The need to amend IMO's EEDI to include a threshold for performance in waves (realistic sea conditions) to achieve the desired GHG reductions
Lindstad, Elizabeth and Borgen, Henning and Eskeland, Gunnar S. and Paalson, Christopher and Psaraftis, Harilaos and Turan, Osman (2019) The need to amend IMO's EEDI to include a threshold for performance in waves (realistic sea conditions) to achieve the desired GHG reductions. Sustainability, 11 (13). 3668. ISSN 2071-1050
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Abstract
The International Maritime Organization (IMO) has established the Energy Efficiency Design Index (EEDI) as the most important policy measure to reduce greenhouse gas (GHG) emissions from shipping. A vessel's EEDI is based on sea trials at delivery, and vessels cannot exceed a threshold for emitted CO2 per ton-mile, depending on vessel type and size. From other industries such as cars we have learnt that testing methods must reflect realistic operating conditions to deliver the desired emission reductions. Present sea-trial procedures for EEDI adjust to 'calm water conditions' only, as a comparative basis, despite calm sea being the exception at sea. We find that this adjustment procedure excessively rewards full bodied 'bulky' hulls which perform well in calm water conditions. In contrast, hull forms optimized with respect to performance in realistic sea-conditions are not rewarded with the current EEDI procedures. Our results indicate that without adjusting the testing cycle requirements to also include a threshold for performance in waves (real sea), the desired reductions will be short on targets and GHG emissions could potentially increase.
Creators(s): | Lindstad, Elizabeth, Borgen, Henning, Eskeland, Gunnar S., Paalson, Christopher, Psaraftis, Harilaos and Turan, Osman; | Item type: | Article |
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ID code: | 68988 |
Keywords: | EEDI, IMO, maritime transport, performance in real sea, sea trial test, Naval architecture. Shipbuilding. Marine engineering, Ocean Engineering |
Subjects: | Naval Science > Naval architecture. Shipbuilding. Marine engineering |
Department: | Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering |
Depositing user: | Pure Administrator |
Date deposited: | 24 Jul 2019 09:34 |
Last modified: | 21 Jan 2021 11:09 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/68988 |
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