46 CFR §68.15

1. (a)The special citizenship status created by the Act entitles the 883-1 corporation to operate, subject to the restrictions in § 68.17, vessels which are qualified to engage in the coastwise trade and are exempt from documentation. (See § 67.9 for classes of exempt vessels.)
2. (b)Vessels, documented or exempt from documentation, employed subject to the Act may carry passengers and merchandise of the 883-1 corporation owning such vessels only between points in the United States, including territories, districts, and possessions thereof embraced in the coastwise laws.
3. (c)The special citizenship status created by the Act entitles an 883-1 corporation owning vessels as described in paragraphs (a) and (b) of this section to transport merchandise or passengers for hire in the coastwise trade as a service for a duly qualified parent or subsidiary corporation as defined in § 68.3.
4. (d)The special citizenship status created by the Act entitles an 883-1 corporation owning vessels as described in paragraphs (a) and (b) of this section to demise or bareboat charter such vessels to common or contract carriers subject to the restrictions in § 68.17(c).