大象传媒

A shadow fleet of old and poorly maintained ships is cruising the high seas, often hiding their true identities through a series of shell companies.

Their numbers have grown massively since Russia鈥檚 full-scale invasion of Ukraine.

Lloyd鈥檚 List estimates as many as 12% of tankers are part of the dark fleet.

There鈥檚 increasing concern about the danger to the environment, and to ship鈥檚 crews. But how effective at tackling the problem is the regulator, the International Maritime Organisation?

Presenter: Lesley Curwen
Producer: Clare Williamson

(Image: Sea and ship at sunset. Credit: Getty Images)