A certificate of number is granted for a number issued under this chapter. The certificate shall be pocketsized, shall be at all times available for inspection on the vessel for which issued when the vessel is in operation, and may be valid for not more than 3 years. The certificate of number for a vessel less than 26 feet in length and leased or rented to another for the latter’s noncommercial operation of less than 7 days may be retained on shore by the vessel’s owner or representative at the place from which the vessel departs or returns to the possession of the owner or the owner’s representative. A vessel that does not have the certificate of number on board shall be identified when in operation, and comply with requirements, as the issuing authority prescribes.
(b) The owner of a vessel numbered under this chapter shall provide—
the issuing authority notice of the transfer of any part of the owner’s interest in the vessel or of the destruction or abandonment of the vessel, within a reasonable time after the transfer, destruction, or abandonment; and
notice of a change of address within a reasonable time of the change, as prescribed by regulation.