Cal. Harb. & Nav. Code § 308

A person who moors a vessel of any kind, to a buoy or beacon, except a designated mooring buoy, placed in the waters of the state by authority of the United States Coast Guard, or who in any manner hangs on to the same, with a vessel, or who willfully removes, damages, or destroys any such buoy or beacon, or any part of the buoy or beacon, or who cuts down, removes, damages, or destroys a beacon erected on land in this state by that authority, is, for every offense, guilty of a misdemeanor.