Internationals waters by law stipulate that the cruise wants to have traveled more than 12 miles from shore until it can be declared to be below international jurisdiction. https://dayinside.com/%EC%B9%B4%EC%A7%80%EB%85%B8%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%95%88%EC%A0%84-%EC%97%AC%EB%B6%80-%EC%95%88%EC%A0%84%ED%95%9C-%EA%B2%8C%EC%9E%84-%ED%99%98%EA%B2%BD%EC%9D%84-%EC%9C%84%ED%95%9C-%ED%95%84/