Requirement for vessel identification.

(a) Every instrument presented for filing and recording must contain sufficient information to clearly identify the vessel(s) to which the instrument relates. (b) Instruments pertaining to vessels which have been documented must contain the vessel's name and official number, or other unique identifier. (c) Vessels which have never been documented must be identified by one of the following: (1) The vessel's Hull Identification Number assigned in accordance with 33 CFR 181.25; or (2) Other descriptive information, which clearly describes the vessel. Such information may include length, breadth, depth, year of build, name of manufacturer, and any numbers which may have been assigned in accordance with 33 CFR part 173.