Iran is exporting the largest amounts of crude oil through the Strait of Hormuz since the war began at the end of February. 

Approximately 6 million barrels of oil on three supertankers sanctioned by the U.S. entered the strait early Monday, according to Bloomberg. The shipments appear to be headed to Singapore. 

Crude oil exports from Iran are known to be transferred onto ships off the coast of Singapore for delivery to China. 

The exports follow the signing of an interim peace agreement last week, which ended the U.S. blockade of the strait. The agreement also ended Iran's blockade of the waterway, and Iran's crude oil exports are part of a larger amount of ship traffic moving through the strait.