46 CFR 67.117: Vessel name designation.

(a) The owner of a vessel must designate a name for the vessel on the Application for Initial Issue, Exchange, or Replacement of Certificate of Documentation; or Redocumentation (form CG-1258) submitted to the Director, National Vessel Documentation Center:

(1) Upon application for initial documentation of the vessel; or

(2) When the owner elects to change the name of the vessel.

(b) The name designated:

(1) Must be composed of letters of the Latin alphabet or Arabic or Roman numerals;

(2) May not be identical, actually or phonetically, to any word or words used to solicit assistance at sea; and

(3) May not contain nor be phonetically identical to obscene, indecent, or profane language, or to racial or ethnic epithets.

(c) The name of a documented vessel may not be changed without the prior approval of the Director, National Vessel Documentation Center.

(d) Until such time as the owner of a vessel elects to change the name of a vessel, the provisions of paragraph (b) of this section do not apply to vessels validly documented before January 1, 1994.