B. A motorboat already covered by a current certificate of number issued under a federally approved numbering system of another state or a federal law, as long as the number so issued is displayed on the motorboat and as long as the motorboat has not been within this State for a period in excess of 60 consecutive days after the state of principal use has been changed;

C. Military or public watercraft, except recreational type watercraft of the United States;

D. A motorboat whose owner is the United States, a state or subdivision thereof that is used for governmental purposes and is clearly identifiable as such;

E. A ship's lifeboat;

F. A motorboat from a country other than the United States, as long as the motorboat has not been within this State for a period in excess of 60 consecutive days; and

G. A motorboat used exclusively for racing purposes that displays on its hull in a prominent manner a valid boat number issued by a recognized racing association.

3. Other watercraft may be numbered. Nothing in this section prohibits the numbering of any watercraft upon the request of the owner. The owner shall comply with all applicable requirements of this chapter if the owner chooses to number a watercraft.

4. Application. The owner of a motorboat requiring or of a watercraft for which the owner wishes to request a certificate of number shall make application to the commissioner on forms approved by the commissioner. The application must show the legal residence of the applicant and the place where the watercraft is situated.

5. Issuance. Upon receipt of the approved application with the proper fee, the commissioner shall enter the application upon the office records and issue the applicant a pocket-sized certificate of number stating:

A. The number assigned to the motorboat;

B. Its description;