§ 151.2020 § 151.2020 Vessels in innocent passage. A foreign vessel that is merely traversing the territorial sea of the United States (unless bound for, entering or departing a U.S. port or navigating the internal waters of the U.S.) does not fall within the applicability of this subpart.
33 CFR §151.2020
33 CFR Part 151
TL;DR
A foreign vessel that is merely traversing the territorial sea of the United States (unless bound for, entering or departing a U.S. port or navigating the internal waters of the U.S.) does not fall within the applicability of this subpart.