46 C.F.R. § 67.261
General requirements
The filing of an instrument against a vessel in accordance with subparts Q or R of this part may be terminated and, if recorded, removed from the record of that vessel by the filing of:
(a) A court order, affidavit, or Declaration of Forfeiture described in § 67.263; or
(b) A satisfaction or release instrument described in § 67.265 which meets the requirements of this part for filing and recording.