Originally Posted by sailingabe41ds
Is there a law preventing two boats having the same name/hailing port?
Not in the USA. Not uncommon to see boats with the same name/hailing port, even in the same marina. And of course, state registered vessels can apply a name and a hailing port on their vessel even though neither the name nor the hailing port are required or recorded for a state registered vessel. State registered vessels are numbered. Only US Coast Guard documented vessels are required to have a name and a hailing port displayed and which name/hailing port are recorded in the vessel registry. But there is no requirement that a USCG documented boat have a unique name/hailing port combination.
I believe in some countries they do require unique name/hailing port and even that the hailing port be an actual port. In the USA the list of places one can register as a hailing port is any place listed in Publication 55DC of the Department of Commerce which list covers just about everywhere and everyplace, including cemeteries, schools, shopping
districts, dry lakes, mountains, national parks, pretty much if it has been named you will find it on the geolist. The hailing port does not have to have any water
or access to water
46 CFR § 67.119 - Hailing port designation.
§ 67.119 Hailing port designation.
(a) Upon application for any Certificate of Documentation
in accordance with subpart K of this part, the owner of a vessel must designate a hailing port to be marked upon the vessel.
(b) The hailing port must be a place in the United States included in the U.S. Department of Commerce's Federal Information Processing Standards Publication 55DC.
(c) The hailing port must include the State, territory, or possession in which it is located.
(d) The Director, National Vessel Documentation
Center has final authority to settle disputes as to the propriety of the hailing port designated.
(e) Until such time as the vessel owner elects to designate a new hailing port, the provisions of paragraph (c) of this section do not apply to vessels which were issued a Certificate of Documentation before July 1, 1982.