For commercial vessel operators, a Certificate of Inspection (COI) ensures legal compliance, safety, and credibility.Issued by the United States Coast Guard (USCG ), the COI verifies that a vessel meets the strict regulatory standards required for transporting passengers or cargo in U.S. waters.Whether you’re a captain operating a charter boat, managing a tour company, or running a freight service, this guide will help you understand everything you need to know about the certificate of inspection—from its purpose and requirements to how to apply and stay compliant.

certificate of inspection

1.What Is a Certificate of Inspection?

A Certificate of Inspection is an official document issued by the USCG that authorizes a vessel to carry a specific number of passengers or cargo based on the results of thorough safety and compliance inspections.

The COI outlines:
  • Vessel type and specifications
  • Passenger and crew limits
  • Routes and waters the vessel is authorized to navigate
  • Required safety equipment (lifesaving, firefighting, navigation)
  • Manning requirements (minimum qualified crew)
  • Inspection validity period and renewal dates

The certificate must be physically displayed onboard the vessel at all times and is typically valid for 1 to 5 years, depending on the vessel type and operations.

2.Who Needs a Certificate of Inspection?

According to U.S. maritime law, the following vessels must have a valid COI:

Type of OperationRequirement for COI
Passenger vessels carrying more than 6 passengers for hireRequired
Small passenger vessels on international routesRequired
Offshore supply vessels, tankers, towing vesselsRequired
Freight or cargo vessels in commercial serviceRequired
Uninspected passenger vessels (UPVs) carrying 6 or fewer passengersNot Required, but must meet minimum safety rules

Even vessels that are privately owned but leased for business may fall under USCG inspection rules. Always consult your local Officer in Charge of Marine Inspection (OCMI) to confirm your obligations.

3.Why the Certificate of Inspection Is So Important

Operating a vessel that requires a COI without one is a violation of federal law. Violators may face:

  • Civil penalties
  • Criminal fines
  • Vessel detention
  • Revocation of captain’s license

The COI verifies that your vessel is structurally sound, equipped with functioning safety gear, and operated by trained personnel—critical for avoiding injuries, casualties, and lawsuits.

Charter services, shipping companies, and tour operators with valid COIs are trusted by clients, insurers, and government agencies. A COI shows your company prioritizes safety and regulatory compliance.

4.COI Validity, Renewals, and Maintenance

Certificate TypeValidity PeriodAdditional Requirements
Small Passenger VesselsUp to 5 yearsAnnual inspections
Towing Vessels (Subchapter M)5 yearsExternal audits or CG inspection
Offshore Supply Vessels2–5 yearsIntermediate inspections
Tank Vessels2 yearsMid-cycle surveys
To remain compliant:
  • Schedule periodic and renewal inspections ahead of expiration.
  • Notify the Coast Guard of any modifications to your vessel.
  • Ensure your safety equipment is operational and up to date.
  • Maintain your crew’s certifications and medical fitness.

5.Special Notes on COI for Specific Vessel Types

1.Small Passenger Vessels (Subchapter T)
  • Must comply with 46 CFR Subchapter T
  • Typically inspected annually
  • Route limitations based on size and design
  • USCG-approved stability letter may be required
2.Towing Vessels (Subchapter M)
  • Can follow Towing Safety Management System (TSMS) or USCG-inspected model
  • Subject to unannounced inspections
3.Fishing Vessels
  • Commercial fishing vessels are often exempt from full COI but may still be inspected for safety compliance (e.g., PFDs, EPIRBs, fire extinguishers)

6.How to Stay COI-Compliant Year-Round

  • Log preventive maintenance: Engines, generators, alarms, and pumps should be regularly serviced and documented.
  • Perform safety drills: Conduct man-overboard, fire, and abandon-ship drills per regulation.
  • Update documentation: Keep all manuals, crew certifications, and emergency contact info current.
  • Communicate with OCMI: Any major change to your vessel or operation should be reported to the USCG.

7.What Happens If You Don’t Have a COI?

Operating without a COI when one is required can result in:

  • Vessel detention or seizure
  • Civil fines up to $35,000 per day
  • Revocation of Merchant Mariner Credentials (MMC)
  • Loss of insurance coverage

If you’re unsure about your compliance status, contact your local USCG Marine Safety Office for guidance.

8.The COI Inspection Process: Step-by-Step

Step 1: Prepare Documentation

Gather technical drawings, equipment lists, crew certifications, safety manuals, and vessel specs. Submit an Application for Inspection of U.S. Vessel (Form CG-3752) to your local USCG office.

Step 2: Schedule the Initial Inspection

Once the Coast Guard receives your application, an inspector will schedule an onboard evaluation. Areas of inspection include:

  • Structural condition of hull and superstructure
  • Fuel and electrical systems
  • Fire safety (extinguishers, alarms, pumps)
  • Lifesaving equipment (life jackets, lifeboats, EPIRBs)
  • Navigation and communication gear
  • Environmental compliance systems
  • Crew licensing, drug testing, and training documentation
Step 3: Correct Any Deficiencies

If the inspection reveals non-compliant items, you’ll receive a Notice of Violation or Letter of Deficiency. Make the corrections before the COI can be issued.

Step 4: Receive Your Certificate

Once your vessel passes inspection, the USCG will issue your Certificate of Inspection—which must be posted where it’s easily visible to passengers and crew.

Conclusion

Securing and maintaining a valid Certificate of Inspection is an essential responsibility for any commercial vessel operator. Beyond fulfilling legal obligations, it builds customer trust, ensures crew safety, and strengthens your company’s operational excellence.

Don’t risk fines or accidents—take the steps today to prepare your vessel for inspection and stay compliant year-round.

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FAQs

Q1: Is a COI the same as vessel registration?

No. Registration proves ownership, while a COI certifies the vessel’s compliance with Coast Guard safety and operational standards.

Depending on vessel type and inspection readiness, it can take from 2 to 8 weeks after submitting the application.

No. A valid COI is required before carrying passengers or operating as a commercial vessel.

 A UPV carries 6 or fewer passengers for hire and is not required to have a COI, but must still meet basic safety rules under 46 CFR Part 25.

Operating with an expired COI is illegal. You must undergo re-inspection and reissuance before resuming operations.