Erik Hanell took the call 10 minutes after leaving the Swedish company's office in Gothenburg on Friday, 19 July.

It was a member of technical manager Northern Marine's emergency team in Glasgow, saying Iranian authorities were approaching the 50,000-dwt MR tanker Stena Impero (built 2018) in the Strait of Hormuz.

Stena Impero timeline

11 July: Iran tries to seize BP tanker in retaliation for Grace 1 seizure in Gibraltar

19 July: Stena Impero boarded by Iranian forces

23 July: Stena still awaiting permission to visit seized crew

25 July: UK commits to escorting its ships through Middle East Gulf

25 July: Stena in direct talks with Iranian authorities

15 August: Gibraltar court allows release of Grace 1

21 August: Stena Bulk chief executive Erik Hanell meets Iranian...