Montana Title 23. Parks, Recreation, Sports, and Gambling § 23-2-511. Operation of unnumbered motorboats or sailboats prohibited--display of registration and validation decals

(1) A motorboat on the waters of this state that is propelled by a motor or an engine of any description or a sailboat on the waters of this state must be properly numbered and display valid registration and validation decals. A person may not operate or give permission for the operation of any motorboat or sailboat on the waters of this state unless the motorboat or sailboat is numbered and displays valid registration and validation decals in accordance with this part and applicable federal law or with a federally approved numbering system of another state and unless:

(2) Upon transfer of ownership of a motorboat or sailboat, the transferred motorboat or sailboat may be operated on the waters of this state for 40 consecutive calendar days immediately following the transfer of ownership without displaying the registration and validation decals required by subsection (1) if when the motorboat or sailboat is operated during those 40 consecutive calendar days, a temporary registration permit has been issued under 61-3-224 and is shown to a warden or other officer upon request.