Iran's sea trade is dwindling as US and European sanctions deter more companies from doing business.
AP Moller-Maersk told Reuters this week it had suspended new tanker deals with Iran due to the EU embargo on buying oil which comes into force in July.
And German container line Hapag-Lloyd said it no longer had any ships calling in Iran.
Earlier this month it emerged traders are no longer fixing Iranian bulkers to load grain in Ukraine after banks refused to transfer cash.
The