Two crude tankers with just under 2 million barrels of oil have sailed through the Strait of Hormuz, ship tracking data showed, in a sign that traffic was picking up following weaker flows, Reuters reports.

Separately, two supertankers, which can carry a maximum of 4 million barrels of crude, sailed into the Gulf through the strait with one of the vessels showing the Iraqi port of Basra as its destination, according to separate shipping tracking data and analysis from Kpler.

The sailings through Hormuz are still a fraction of the average daily crossings of 125 vessels before the Iran war began on February 28.