Teekay Group and Cosco Shipping Energy Transportation, two of the world’s largest players in oil and gas shipping, claim they have improved their energy efficiencies after adopting measures to reduce fuel consumption and greenhouse gas emissions.

A small but growing number of ship operators are reporting environmental data annually amid rising regulatory pressure to combat global warming.

The International Maritime Organization has established decarbonisation targets for shipping in 2030 and 2050, but details of related regulations are still being ironed out.