They break the laws in so many ways. Remember the Turkish ship Putins navy stopped and boarded after he withdrew from the grain deal. He always gets away while breaking the law. Our leaders wont even use the law to catch a crime.

"AIS cannot be switched off, save for very few exceptions. According to IMO guidelines provided by Resolution A. 917(22), AIS should always be in operation when ships are underway or at anchor".

This alone is enough to stop them and drag them to the nearest port for further checks. Just keep the checks running for a month. It will become an international incident. Drag the ship owners to the court. Do this for one ship a month, rest of the shadow fleet will vanish.