The vessels are sailing normally, but have not yet fully exited a high-risk zone, the ministry said, declining to disclose further details on the vessels.
The ships do not have South Korean crew on board and are not bound for South Korea, the ministry said.
A total of 22 South Korean-operated ships remain stranded in the Strait of Hormuz, it said.
In a seperate development the first round of talks between high-ranking US and Iranian officials in Switzerland ended Monday, mediators said, after a tense opening marked by Tehran’s announcement it had again closed the Strait of Hormuz and US President Donald Trump repeating his threats to resume attacks on Iran.
Technical talks will continue for the rest of the week in the Qatari-owned Swiss mountain resort of Buergenstock, according to the statement, which was released by the Qatari foreign ministry.
