[Code of Federal Regulations] [Title 19, Volume 1] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 19CFR4.65] [Page 46] TITLE 19--CUSTOMS DUTIES CHAPTER I--UNITED STATES CUSTOMS SERVICE, DEPARTMENT OF THE TREASURY PART 4--VESSELS IN FOREIGN AND DOMESTIC TRADES--Table of Contents Sec. 4.65 Verification of nationality and tonnage. 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.