14 USC 522: Coast Guard Boarding, Jurisdiction, and Use of Force

14 USC 522 is the statute that gives the Coast Guard its law enforcement authority on the water. It lets commissioned, warrant, and petty officers board any vessel subject to United States jurisdiction at any time, without a warrant, to question people on board, examine documents, inspect the vessel, and search for evidence of federal law violations. If they find a violation, the statute directs them to arrest the person responsible and seize the vessel or cargo when forfeiture or a fine applies. It also authorizes “all necessary force to compel compliance.”¹ That combination — warrantless boarding, mandatory arrest and seizure language, and force authority — makes it one of the broadest enforcement powers held by any federal agency.

What the Statute Actually Authorizes

The text of 14 USC 522 covers five distinct acts: inquiries, examinations, inspections, searches, and seizures. It also covers arrests. Coast Guard officers can carry out any of these on the high seas or on waters over which the United States has jurisdiction, and they can do it for the general purpose of preventing and suppressing violations of federal law.¹

Two things stand out about the language. First, the statute does not list specific crimes. It covers all federal law violations, so the same authority reaches drug trafficking, immigration offenses, customs fraud, environmental discharges, fisheries rules, and vessel safety standards. The penalties attached to any given case come from whatever underlying federal statute was broken. Second, the statute uses mandatory language once a violation is found. A person committing a federal offense “shall be arrested.” A vessel or cargo subject to forfeiture or a fine “shall be seized.” That leaves less on-the-spot discretion than officers have in many land-based settings.

The authority also follows a fleeing suspect off the water. If someone escapes to shore during a boarding or pursuit, the statute allows immediate arrest on land.

Where the Authority Reaches

Geography matters. The Coast Guard’s power under 14 USC 522 attaches to vessels subject to U.S. jurisdiction, and which vessels qualify depends on where they are.

Territorial Waters and the Contiguous Zone

Inside U.S. territorial waters, which run 12 nautical miles out from the coast, the Coast Guard exercises full enforcement authority over both American and foreign vessels. Foreign ships keep a right of innocent passage but remain subject to U.S. laws during transit. From 12 to 24 nautical miles, in the contiguous zone, enforcement focuses on preventing violations of customs, fiscal, immigration, and sanitary laws that touch U.S. territory.²

The Exclusive Economic Zone

The Exclusive Economic Zone extends to 200 nautical miles. The United States does not claim full sovereignty there, but it holds sovereign rights over natural resources and jurisdiction over environmental protection and marine research.² Coast Guard enforcement in the EEZ concentrates on illegal fishing and pollution.

The High Seas

Beyond any nation’s EEZ, the Coast Guard still acts against piracy, human trafficking, and drug smuggling under international treaties and universal jurisdiction. The Maritime Drug Law Enforcement Act extends federal drug prohibitions to acts committed outside U.S. territorial jurisdiction.³ In United States v. Bellaizac-Hurtado, the Eleventh Circuit held that the EEZ qualifies as part of the “high seas” for Congress’s constitutional authority to define and punish felonies there, upholding MDLEA enforcement in that zone.

Stateless Vessels

A vessel flying no flag, or one carrying conflicting indicators of nationality, occupies a category of its own. Under both international law and the MDLEA, a vessel without nationality can be boarded and searched without asking any flag state for permission. Boarding teams look for missing registration markings, false or conflicting documentation, and the absence of an official number stamped on the main beam. When a vessel cannot establish nationality, the Coast Guard treats it as subject to U.S. jurisdiction and proceeds with full enforcement.

Why No Warrant Is Needed

This is the part of 14 USC 522 that surprises most people. On land, the Fourth Amendment generally requires a warrant before officers search property. At sea, that presumption does not apply the same way. The Supreme Court in United States v. Villamonte-Marquez (1983) upheld warrantless Coast Guard boardings, pointing to the government’s strong interest in regulating maritime commerce and enforcing customs laws. The First Circuit reached a similar conclusion in United States v. Arra (1980), ruling that warrantless searches of vessels in open waters do not violate the Fourth Amendment.

In practice, a boarding usually begins as a documentation and safety inspection. Officers check the vessel’s paperwork, safety equipment, and compliance with navigation and environmental rules. Commercial fishing vessels, for example, must carry a Certificate of Documentation, appropriate officer licenses, an FCC Ship Radio Station License, and current navigational charts, among other records.⁴ If something during that inspection creates reasonable suspicion of criminal activity, the boarding escalates into a law enforcement search.

Warrantless boarding is not the same as unlimited search. Fourth Amendment protections still apply to what happens once officers are aboard. Evidence obtained after a search exceeds the scope of a lawful inspection, without reasonable suspicion supporting the escalation, can be challenged in court. But the initial stop itself needs no warrant and no particularized suspicion. If you are on the water, a Coast Guard vessel can pull alongside and come aboard.

Use of Force

The Coast Guard operates under a Department of Homeland Security use-of-force policy that generally prohibits warning shots and disabling fire, with specific carve-outs for maritime and aviation operations. On the water, authorized personnel may fire warning shots as a signal to a vessel to stop, but only after other signaling methods have failed. Officers may also fire at a vessel’s engine or other components to disable it. Both warning shots and disabling fire are classified as less-lethal force under the policy.⁵

The typical sequence begins with verbal and visual warnings, escalates through progressively more disruptive tactics, and only reaches disabling fire after non-compliance continues. Deadly force remains available when lives are in immediate danger, under the same general standards that govern other federal law enforcement.

What Happens After a Boarding

The consequences of a Coast Guard enforcement action run on three parallel tracks: civil penalties, criminal charges, and credential proceedings. Which track applies depends on what the boarding found and who was involved.

Civil Penalties

Many violations, particularly regulatory noncompliance, safety issues, and smaller environmental matters, are handled administratively. The process starts with a Notice of Violation proposing a specific fine. The recipient has 45 days to pay, which settles the case, or to decline and request a hearing. Doing nothing produces a default finding at the full amount.⁶

If you decline the NOV, a Hearing Officer reviews the file, proposes a revised penalty based on available evidence, and gives you 30 days to settle. If you still want to contest, you can present facts, documents, testimony, and other evidence at a hearing.⁷ The Coast Guard’s burden is preponderance of the evidence, meaning they only need to show the violation more likely than not occurred.

The dollar amounts are larger than many boat operators expect. For assessments issued after December 29, 2025, negligent operation of a recreational vessel can cost up to $8,705 per violation, while negligent operation of a commercial vessel runs up to $43,527. Class II oil or hazardous substance discharges reach $295,564. A related series of recreational vessel manufacturing defects can reach $413,388.⁸ Each day of a continuing violation typically counts as a separate offense, which is how ongoing environmental discharges climb into six-figure territory.

Criminal Charges

When a boarding uncovers a federal crime, the arrested individual is turned over to federal prosecutors and proceeds through the standard federal court system with full constitutional protections, including counsel and a jury trial. The specific exposure depends on the underlying statute. MDLEA violations track the sentencing framework of the Controlled Substances Act, and the statute imposes up to 15 years for operating or embarking on a vessel used for drug trafficking even when the defendant was not personally handling the narcotics.³ Knowing violations of the Act to Prevent Pollution from Ships are Class D felonies carrying up to 10 years.⁹ Customs violations under 19 USC 1584 include per-ounce penalties for specific narcotics and forfeiture of vessels of 500 net tons or less carrying prohibited imports.¹⁰ Illegal fishing under the Magnuson-Stevens Act carries civil penalties up to $100,000 per violation and allows in rem seizure of the vessel, gear, and cargo.¹¹

Vessel and Cargo Seizure

Seized vessels and cargo often enter civil asset forfeiture proceedings, where the government seeks permanent ownership. Some categories of seized property — contraband, currency, and items particularly suited for illegal use — cannot be released back to the claimant even while proceedings are pending.¹²

Mariner Credential Actions

Licensed mariners face a third track. The Coast Guard can start suspension and revocation proceedings against a Merchant Mariner Credential for offenses like operating under the influence, drug use, negligence, or misconduct. These proceedings run under 46 CFR Part 5 before administrative law judges. Before a hearing, mariners can negotiate settlement agreements with the investigating officer that may include outright suspension, suspension on probation, mandatory training, or medical evaluations.¹³ An ALJ decision can be appealed to the Commandant, and from there to the National Transportation Safety Board within 10 days.¹⁴

Challenging an Enforcement Action

The mechanism for pushing back depends on which track your case is on. For a civil penalty, the first decision point is the 45-day window after the NOV: pay to settle, or request a hearing to contest.⁶ If the Hearing Officer rules against you, appeal to the Commandant is available, and the Commandant can reduce or eliminate the penalty.⁷

For criminal charges, the fight happens in federal district court. The warrantless boarding authority in 14 USC 522 does not strip Fourth Amendment protections from what officers do after they come aboard. Evidence gathered from a search that outran the scope of a lawful inspection, without reasonable suspicion to support the escalation, can be challenged through a motion to suppress.

For credential proceedings, the appeal chain runs from the ALJ to the Commandant to the NTSB, with tight filing deadlines at each stage. A missed deadline can lock in the result regardless of the merits.

1
Office of the Law Revision Counsel. 14 USC 522 – Law Enforcement
2
National Oceanic and Atmospheric Administration. Maritime Zones and Boundaries
3
Office of the Law Revision Counsel. 46 USC Ch 705 – Maritime Drug Law Enforcement
4
dco.uscg.mil. Federal Requirements for Commercial Fishing Industry Vessels
5
Homeland Security. Department Policy on the Use of Force
6
eCFR. 33 CFR 1.07-11 – Notice of Violation
7
eCFR. Subpart 1.07 Enforcement; Civil and Criminal Penalty Proceedings
8
eCFR. 33 CFR 27.3 – Penalty Adjustment Table
9
Office of the Law Revision Counsel. 33 USC 1908 – Penalties for Violations
10
Office of the Law Revision Counsel. 19 USC 1584 – Falsity or Lack of Manifest; Penalties
11
Office of the Law Revision Counsel. 16 USC 1858 – Civil Penalties and Permit Sanctions
12
eCFR. 19 CFR Part 162 Subpart H – Civil Asset Forfeiture Reform Act
13
National Maritime Center. Settlement Agreements vs Administrative Clemency
14
eCFR. 46 CFR Part 5 – Marine Investigation Regulations, Personnel Action