19 C.F.R. § 4.65 Verification of nationality and tonnage.
Title 19 - Customs Duties
The nationality and tonnage of a vessel shall be verified by examination of its marine document. If such examination discloses that insufficient tonnage tax was collected on entry of the vessel, no clearance shall be granted until the deficiency is paid.
Title 19: Customs Duties
PART 4—VESSELS IN FOREIGN AND DOMESTIC TRADES
Foreign Clearances
§ 4.65 Verification of nationality and tonnage.

