To prevent the inflow of possible radioactive ballast water into Korean waters arising from discharge of treated wastewater from Fukushima nuclear power plant, the following measures are to be implemented.

ㅇ The vessel subject to regulations: Vessels that are entering the ports of Republic of Korea after taking up ballast water in the ports belonging to Aomori Prefecture, Iwate Prefecture, Fukushima Prefecture, Miyagi Prefecture, Ibaragi Prefecture, Chiba Prefecture on the eastern coast of Japan.

1. Vessels planning to enter Korean ports after taking on ballast water from six Eastern ports in Japan. (Aomori, Iwate, Fukushima, Miyagi, Ibaraki, Chiba) Action required: Submission of a ballast water reporting form* 24 hours prior to entering the Korean port. (*Including details related to the management of ballast water, such as the uptake, treatment, and discharge, etc.). There will be guidance from the local agents when they request the vessel for the necessary documents for port clearance, and the details will be entered into PORT-MIS by the agent.

2. Vessels planning to discharge ballast water in Korean waters after taking on ballast water from six Eastern prefectures in Japan. 
Action required: Exchange their Ballast water outside of Korean jurisdictional waters* before entering the Korean port. (*The exchange operation must take place between the passage of Tsugaru Strait and 135°30’E when sailing northward, such as passing Tsugaru Strait. When the vessel sails southward, such as through the Kanmon Strait, the exchange must be made between 34°35’N and 132°30’E.)


3. Vessels without a plan to discharge ballast water into Korean waters after taking on ballast water from six Eastern prefectures in Japan.
Action required: Submit data proving non-discharge of ballast water to the person in charge of the relevant Regional Maritime Affairs and Fisheries Office via email at least an hour before departure.   
Documental proof includes the following: 
- Ballast water record book
- Log book
- BWMS operation record
- Ballast water tank capacity (photos)

The relevant Regional Maritime Affairs and Fisheries Office will review the submitted documents to verify non-discharge status prior to departure (onboard investigation may be conducted if necessary). Vessel departure is only permitted following verification of ballast water status.