German container line Hapag-Lloyd is testing a new blend of biofuel and low sulphur fuel oil (LSFO) to cut CO2 emissions.

The company said its 4,402-teu boxship Montreal Express (built 2003) has bunkered the so-called B20 in Rotterdam for the first time.

This is 80% LSFO and 20% biofuel from cooking oil and fats previously used in the catering industry.

"The biodiesel generates up to 90% less CO2 emissions than conventional fuels," it said.