South Korea’s Ministry of Oceans and Fisheries has said that four more South Korean-operated ships have safely left the Strait of Hormuz, bringing the number of vessels that have left the region to six, AlJazeera reports.

“Four vessels operated by our shipping companies that were waiting inside the Strait of Hormuz have passed through the strait and are sailing normally,” the ministry said, according to the Yonhap news agency.

The ships had 26 Korean crew members on board, and one of the ships is headed back to South Korea, the ministry added.

With their departure, the number of South Korea-linked ships remaining inside the strait has fallen to 18, Yonhap reported.