Bringing Oligarch Accountability Through Seizure Act or the BOATS Act This bill prohibits Russian vessels from entering or operating in the navigable waters of the United States or transferring cargo in any port or place under U.S. jurisdiction, except for national security purposes. Violation of this prohibition subjects a vessel to seizure and forfeiture. Any Russian vessel seized and forfeited to the United States shall be sold at an auction to any entity that is not affiliated with Russia. The proceeds of such auction may only be used for humanitarian aid to Ukraine that is provided by other member states of the North Atlantic Treaty Organization.