At least eight ships controlled by Japan¡¯s Mitsui OSK Lines have headed out of the Strait of Hormuz using a route close to Iran, including some of the last trapped oil tankers to exit the waterway.

The vessels include five supertankers, each capable of hauling 2 million barrels of crude, two chemical tankers and a car carrier, according to ship-tracking data and the database Equasis. They¡¯re moving in a convoy and some previously attempted to exit, before abandoning their journeys.

Iran has sought to assert control over Hormuz, through which a fifth of all oil moved before the war, since it reached an interim peace deal with the U.S. last month.