The Diplomat reports that Japan is considering changes to their laws governing the Japan Coast Guard.
One proposal seeks to add “maintenance of territorial sea integrity” and “security of territorial sea” to the Act’s mission, while another seeks to moderate the prerequisites allowing harm through use of weapons by Coast Guard officers. All of these proposals seek to give the JCG more muscle.
I don’t have a feel for what the actual proposed changes are, but I do know the Japan Coast Guard does not have the same close relationships with the Japanese Navy (Maritime Defense Force) that the USCG enjoys with the USN. It is not a military service. They don’t share equip or even use the same fuel. You can bet they don’t share the same communications systems. This means that the organization is not as useful as it might be in wartime, and, of more immediate concern, it means coordination in crisis is far more difficult.
Currently none of the Japan Coast Guard vessels have weapons larger than 40mm, and very few have an air search radar or any kind of AAW firecontrol system. If Japanese Self Defense Forces are not immediately available as backup, it might be hard not to feel intimidated by better armed China Coast Guard vessels, particularly if supported by aircraft.