19 CFR § 4.65 - Verification of nationality and tonnage.

---
identifier: "/us/cfr/t19/s4.65"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "19 CFR § 4.65 - Verification of nationality and tonnage."
title_number: 19
title_name: "Customs Duties"
section_number: "4.65"
section_name: "Verification of nationality and tonnage."
chapter_name: "U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY"
part_number: "4"
part_name: "VESSELS IN FOREIGN AND DOMESTIC TRADES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 301; 19 U.S.C. 66, 1415, 1431, 1433, 1434, 1624, 2071 note; 46 U.S.C. 501, 60105."
regulatory_source: "28 FR 14596, Dec. 31, 1963, unless otherwise noted."
cfr_part: "4"
---


# 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.