California Code, Vehicle Code - VEH § 9860

(a) Certificates of number shall be renewed before midnight of the expiration date by presentation of the certificate of number last issued for the vessel or by presentation of a potential registration card issued by the department.

(b) The fee for renewal shall be twenty dollars ($20) for each two-year period, and shall accompany the request for renewal.

(c) If the certificate of number and potential registration card are unavailable, the fee specified in Section 9867 shall not be paid.

(d) The department shall additionally collect a quagga and zebra mussel infestation prevention fee in an amount established by the Department of Boating and Waterways pursuant to Section 675 of the Harbors and Navigation Code.

(e) The department shall provide documentation of its administrative costs pursuant to this section to the Department of Boating and Waterways.