Information sourced from:
European Commission, Environment (2015), Emissions from Maritime Transport [online], Available from: http://ec.europa.eu/environment/air/transport/ships.htm [accessed 18/05/2015].
Stone Chambers (2015), Annex VI MARPOL Restrictions: An Increased Cap on Sulphur Emissions from January 2015 [online], Available from: http://www.stonechambers.com/news-pages/09.02.15--article-annex-vi-marpol-restrictions--an-increased-cap-on-sulphur-emissions-from-january-2015---james-smithdale.asp [accessed 18/05/2015].