(a) Upon the satisfaction of a security interest in a watercraft for which the certificate of title is in the possession of the lienholder, he shall, within 10 days after demand and, in any event, within 30 days, execute a release of his security interest, and mail or deliver the certificate and release to the next lienholder named therein, or, if none, to the owner or any person who delivers to the lienholder an authorization from the owner to receive the certificate. The owner, other than a dealer holding the watercraft for resale, shall promptly cause the certificate and release to be mailed or delivered to the Department of Natural Resources, which shall release the lienholder’s rights on the certificate or issue a new certificate.
     (b) Upon the satisfaction of a security interest in a watercraft for which the certificate of title is in the possession of a prior lienholder, the lienholder whose security interest is satisfied shall within 10 days after demand and, in any event, within 30 days execute a release and deliver the release to the owner or any person who delivers to the lienholder an authorization from the owner to receive it. The lienholder in possession of the certificate of title shall either deliver the certificate to the owner, or the person authorized by him, for delivery to the Department of Natural Resources, or, upon receipt of the release, mail or deliver the certificate and release to the Department, which shall release the subordinate lienholder’s rights on the certificate or issue a new certificate.