Japanese oil company Idemitsu has used carbon credits to offset greenhouse gas emissions made on a return VLCC voyage between Japan and the Middle East Gulf.

The trial run was carried out on the 300,500-dwt VLCC Nissho Maru (built 2004), controlled by tanker subsidiary Idemitsu Tanker, which carried a full crude oil cargo.

Idemitsu said it achieved a carbon-neutral voyage, offsetting around 100,000 tonnes of carbon emissions in total.