In this chapter:

(1) National trust.—The term “National Trust” means the National Trust for Historic Preservation in the United States established under section 312102 of this title.

(2) Private nonprofit organization.—The term “private nonprofit organization” means any person that is exempt from taxation under section 501(a) of the Internal Revenue Code of 1986 (26 U.S.C. 501(a)) and described in section 501(c)(3) of the Internal Revenue Code of 1986 (26 U.S.C. 501(c)(3)).

(3) Program.—The term “Program” means the National Maritime Heritage Grants Program established under section 308703(a) of this title.

(4) State historic preservation officer.—The term “State Historic Preservation Officer” means a State Historic Preservation Officer appointed pursuant to section 302301(1) of this title by the chief executive official of a State having a State Historic Preservation Program approved by the Secretary under that section.