The South Korean Coast Guard and the U.S. Coast Guard have launched a joint operation to crack down on illegal fishing in the North Pacific.

This collaboration marks a significant escalation in maritime cooperation between the two allies to protect dwindling fish stocks and maintain regional stability. Because the North Pacific high seas fall outside the sovereign jurisdiction of any single nation, enforcement is notoriously difficult, making international partnerships essential for effective monitoring.

Personnel from the U.S. Coast Guard boarded a 3,000-ton class patrol vessel [1] for the first time this week. The ship departed from Mukho Port in Donghae to begin a 20-day mission [2] covering approximately 10,000 kilometers [3]. While South Korean patrol ships have conducted these operations for two consecutive years, this is the first time U.S. personnel have been embedded on the vessel to strengthen coordination, Song Se-hyeok said.

The joint mission is part of a broader effort by member states of the North Pacific Fisheries Commission to curb illegal fishing. Such activities deplete marine resources, and negatively impact coastal fisheries.

According to YTN, an average of 360 vessels [4] have operated in these monitored waters annually over the last four years. The majority of these ships are from China, Taiwan, and Japan [4].

"The North Pacific high seas are difficult to crack down on because the sovereignty of a specific country does not reach them," a YTN anchor said.

For the first time, US personnel are boarding a South Korean patrol ship to monitor the North Pacific high seas.

The inclusion of U.S. Coast Guard personnel on a South Korean vessel signals a shift from independent patrolling to integrated enforcement. By leveraging the legitimacy and resources of two major maritime powers, the operation aims to create a more formidable deterrent against illegal fishing fleets from China, Taiwan, and Japan in international waters where legal loopholes often protect poachers.