Electric auxiliary propulsion for improved fuel efficiency and reduced emissions

Edward A. Sciberras, Bashar Zahawi, David J. Atkinson, Aitor Juandó

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Auxiliary drives can provide an alternative propulsion system for marine vessels giving the potential to achieve improved environmental performance during low-speed sailing. In this work, two case vessels were considered for analysis, a Roll-On-Roll-Off ship and a harbour tug boat. Actual sailing operational profiles were used as the basis for energy considerations to assess the potential for lower emissions. An energy-centric simulation model was built to estimate the emission of various pollutants, considering different machinery set-ups. Results have shown that savings are possible, especially for vessels which run on residual fuels, where auxiliary drives provide a way of exploiting the advantages of cleaner sources for manoeuvring instances.

Original languageBritish English
Pages (from-to)36-44
Number of pages9
JournalProceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment
Issue number1
StatePublished - Feb 2015


  • Air pollution
  • Marine vehicles
  • Permanent magnet machines
  • Variable speed drives


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