Boundary line
Boundary line marks the dividing point between internal and offshore waters for the purposes of several U.S. statutes and, with exceptions, generally follows the trend of the seaward, highwater shorelines. See 46 CFR part 7.
Source
46 CFR § 10.107
Scoping language
With respect to part 16 of this subchapter only, if the definitions in paragraph (b) of this section differ from those set forth in 16.105, the definition set forth in 16.105 applies.