Title 19 › CHAPTER 4 — TARIFF ACT OF 1930 › SUBTITLE III — ADMINISTRATIVE PROVISIONS › Part V — Enforcement Provisions › § 1587
Customs officers may board and inspect any hovering vessel, any ship inside U.S. customs waters or a customs-enforcement area that fails to show required lights (except for unavoidable causes), any ship that has been chased, and foreign ships that have a special agreement to be checked outside U.S. waters. They can do this at any time. Officers may question the ship’s master under oath, use the same rules on or off their usual district, and take the ship to the most convenient U.S. port to inspect the cargo. If the master refuses or lies, he faces a fine between $500 and $5,000. If dutiable goods meant for the United States are found, the ship and cargo are seized and forfeited. Prohibited imports and alcoholic beverages found on board (sea stores excepted) are presumed destined for the United States. If a ship with cargo is later found light, in ballast, or partly unloaded, and the master cannot properly explain where prohibited goods or alcohol were lawfully discharged, the ship will be seized and forfeited. A ship genuinely traveling from one foreign port to another, and making normal progress, is not subject to forfeiture.
Full Legal Text
Customs Duties, Source: USLM XML via OLRC
Legislative History
Reference
Citation
19 U.S.C. § 1587
Title 19, Customs Duties
Last Updated
Sep 22, 2026
Release point: 119-110