As I explore post pandemic charter boat options I still have not been able to get a answer to the question of import duties if a US flagged vessel is moved from the BVI to the USVI. I understand that the vessel is exempt in USVI waters but I am told that if the vessel overnights in any other US waters including the Spanish Virgins the import tax becomes due and payable. Others say not true. Anyone have a reference or source one way or another?