(a) Subject to paragraph (b) of this section, the effect of perfection and non-perfection of a security interest and the priority of a perfected or unperfected security interest with respect to the rights of a purchaser or creditor, including a lien creditor, is governed by State law.

(b) If, while a security interest in a vessel is perfected by any method under this subpart, the office creates a certificate of title that does not indicate that the vessel is subject to the security interest or contain a statement that it may be subject to security interests not indicated on the certificate—

(1) A buyer of the vessel, other than a person in the business of selling or leasing vessels of that kind, takes free of the security interest if the buyer, acting in good faith and without knowledge of the security interest, gives value and receives possession of the vessel; and

(2) The security interest is subordinate to a conflicting security interest in the vessel that is perfected under § 187.315 after creation of the certificate and without the conflicting secured party's knowledge of the security interest.