Maryland Code, NATURAL RESOURCES 8-714
(b) Numbers displayed by authority of manufacturer’s or dealer’s certificates of number may be transferred from 1 vessel to another vessel owned by the manufacturer or dealer and may be affixed in a temporary manner. These numbers shall be used only on vessels demonstrated, tested, or owned by the manufacturer or dealer, and these numbers are not valid for use on the vessels when chartered, rented, or leased by the manufacturer or dealer.
(c) Each application for the manufacturer’s or dealer’s certificates of number shall be on forms the Department approves and be accompanied by a fee of $24. The certificate of number issued under this section is valid for a period not to exceed 2 years and shall expire on December 31 of the calendar year following the year the certificate is issued.