UK charity Human Rights at Sea has said it has been deluged by cases of seafarers stuck on vessels after companies struggled to come to terms with the coronavirus outbreak.
The crew members are being retained on ships after signing off or left ashore in foreign countries unable to return to their families without funds.
And they do not have sufficient information being passed to them due to the unprecedented Covid-19 crisis, it revealed, leading to what one captain called "mental agony".