California Code, Vehicle Code - VEH § 9905

An owner who has made a bona fide sale or transfer of an undocumented vessel and has delivered possession of the vessel to a purchaser shall not by reason of any of the provisions of this code or the Harbors and Navigation Code be deemed the owner of the vessel so as to be subject to civil liability for the operation of the vessel thereafter by another when the owner, in addition to the foregoing, has fulfilled either of the following requirements: