1. Greenhouse Gas Emissions in Shippingwww.www.shell.com/energy-and-innovation.html
2. Accounting for Well-to-Wake Carbon Dioxide Equivalent Emissions in Maritime Transportation Climate Policieshttps://theicct.org
3. Shipping and Climate Changewww.transportenvironment.org
4. Energy Transition Outlookhttps://www.dnv.com/Publications/energy-transition-outlook-2020-186774
5. Clarksons World Fleet Registerhttp://www.clarksons.net