Green financing hasn't yet taken hold in shipping — but it could, if done right an OOCL executive told attendees at the London International Shipping Week conference Thursday.

Michael Fitzgerald, deputy chief financial officer at the Hong Kong liner company, said green financing has to be an incentive and every part of the supply chain needs to be involved.

"If we're looking to make the changes that are necessary we can't just say, 'Those guys, the shipping guys, they'll pay for it,'" he said.