No. According to Title 46 CFR Part 67, the designated hailing port of a Federally Documented vessel can be any place included in the U.S. Department of Commerce’s Federal Information Processing Standards Publication 55DC .
§ 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. [CGD 89-007, CGD 89-007a, 58 FR 60266, Nov. 15, 1993, as amended by CGD 95-014, 60 FR 31604, June 15, 1995; USCG-1998-4442, 63 FR 52191, Sept. 30, 1998]
§ 67.123 Name and hailing port marking requirements.
(a) For vessels other than those covered in paragraphs (b) and (c) of this section, the name of the vessel must be marked on some clearly visible exterior part of the port and starboard bow and the stern of the vessel. The hailing port of the vessel must be marked on some clearly visible exterior part of the stern of the vessel.
(b) Vessels with square bow. For vessels having a square bow, the name of the vessel must be marked on some clearly visible exterior part of the bow in a manner to avoid obliteration. The name and hailing port must be marked on some clearly visible exterior part of the stern.
(c) Recreational vessels. For vessels documented exclusively for recreation, the name and hailing port must be marked together on some clearly visible exterior part of the hull.
(d) The markings required by paragraphs (a), (b), and (c) of this section, which may be made by the use of any means and materials which result in durable markings, must be made in clearly legible letters of the Latin alphabet or Arabic or Roman numerals not less than four inches in height.