46 CFR 67.9 - Vessels excluded from or exempt from documentation.
(b) A vessel which does not operate on the navigable waters of the United States or in the fisheries in the Exclusive Economic Zone is exempt from the requirement to have a Certificate of Documentation.
(c) A non-self-propelled vessel, qualified to engage in the coastwise trade is exempt from the requirement to be documented with a coastwise endorsement when engaged in coastwise trade:
Title 46 published on 2013-10-01
no entries appear in the Federal Register after this date.