Earlier on Tuesday the Iran-flagged tanker Petunia crossed the Caribbean Sea, following the route taken by Fortune and Forest vessels in recent days.

The Fortune was welcomed by Venezuela 's oil minister, Tareck El Aissami, at PDVSA 's El Palito refinery on Monday who thanked Iran for its help during the crisis, which caused Venezuelans to wait for gasoline in long queues.

The deal has been criticized by the U.S. as both OPEC member nations face sanctions. Earlier this month, a US official said the administration of President Donald Trump was considering responses to the shipment, prompting the Iranian government to warn Washington against any military action.

During their voyage, the vessels did not seem to encounter any interference.

According to reports and company data, the Venezuelan firm, whose nameplate refining capacity exceeds 1.3 million barrels per day, raised crude processing for fuel supply this month to 215,000 bpd, from 110,000 bpd in March.

But its crude production and exports had another hit in May due to a lack of buyers in the middle of sanctions, driving stocks up.

Maritime Business World