COVID-19 threat: Merchant ships stalled while others stuck at sea

The crews stranded around the world struggle to understand why they are considered potential sources of infection.

The coronavirus pandemic has been making it difficult for crews on merchant ships to return home.

Some have been at sea for more than six months.

At the same time, crews hoping to resume work have been struggling to get to their ships.

Al Jazeera’s John Psaropoulos reports from the Greek port of Piraeus.