A bill to amend title 46, United States Code, with respect to the navigation of submersible or semi-submersible vessels without nationality.

Amends federal law relating to maritime drug law enforcement to prohibit knowingly or intentionally operating by any means, or embarking in, any semi-submersible vessel or any manned or unmanned submersible vessel that is without nationality and that is navigating or has navigated into, through, or from waters beyond the outer limit of the territorial sea of a single country or a lateral limit of that country's territorial sea with an adjacent country.