43 USC 2102 - Definitions
For purposes of this chapter
(a) the term embedded means firmly affixed in the submerged lands or in coralline formations such that the use of tools of excavation is required in order to move the bottom sediments to gain access to the shipwreck, its cargo, and any part thereof;
(b) the term National Register means the National Register of Historic Places maintained by the Secretary of the Interior under section 470a of title 16;
(c) the terms public lands, Indian lands, and Indian tribe have the same meaning given the terms in the Archaeological Resource[1] Protection Act of 1979 (16 U.S.C. 470aa–470ll);
(d) the term shipwreck means a vessel or wreck, its cargo, and other contents;
(e) the term State means a State of the United States, the District of Columbia, Puerto Rico, Guam, the Virgin Islands, American Samoa, and the Northern Mariana Islands; and