Shipowners should have a back-up plan in case of teething troubles with alternative fuel supply, Bo Cerup-Simonsen believes.

The chief executive of the Maersk Mc-Kinney Moller Center for Zero Carbon Shipping told TradeWinds that shipping faces a big challenge to meet its decarbonisation targets and is in the early stages of transition.

“Energy efficiency will take us far, but it will not take us anywhere near [where] we need to be 10 years, not to say 20 years, from now,” he said.