Cal. Harb. & Nav. Code § 506.5

Within 10 days after the sale of any vessel pursuant to the provisions of Section 503 or 504, the legal or registered owner may redeem the vessel upon the payment of the amount of the lien, all costs and expenses of the lien, together with interest on that sum at the legal rate from the due date thereof until the repayment. If the vessel is not redeemed, all lien sale documents required by the department to effect transfer of title shall then be completed and delivered to the buyer.