UN maritime head says 6,000 seafarers 'remain stranded' in Gulf

Arsenio Domingue, secretary general of the International Maritime Organization, has called for "maximum restraint and de-escalation".

"I condemn the attacks over the past two days against several ships transiting the Strait of Hormuz," he said in a statement after US President Trump said the ceasefire with Iran was over.

"These reckless attacks have again placed innocent seafarers in grave danger. No seafarer should have to risk their life simply for doing their job," Dominguez added.

"As long as the safety and security of crews cannot be assured, I urge flag states, shipowners, operators and all relevant authorities to avoid exposing seafarers to unnecessary danger by transiting the Strait," the statement reads.