# 46 CFR § 4.03-2: Serious marine incident

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-2

## Section

- **Citation:** 46 CFR § 4.03-2
- **Heading:** Serious marine incident
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 46—Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER A—PROCEDURES APPLICABLE TO THE PUBLIC > PART 4—MARINE CASUALTIES AND INVESTIGATIONS > Subpart 4.03—Definitions

## Text

The term serious marine incident includes the following events involving a vessel in commercial service, floating OCS facility, or MODU as described in § 4.03-1(1) and (2):
(a) Any marine casualty or accident as defined in § 4.03-1 which is required by § 4.05-1 to be reported to the Coast Guard and which results in any of the following:
(1) One or more deaths;
(2) An injury to a crewmember, passenger, or other person which requires professional medical treatment beyond first aid, and, in the case of a person employed on board a vessel in commercial service, floating OCS facility, or MODU, which renders the individual unfit to perform routine vessel duties;
(3) Damage to property, as defined in § 4.05-1(a)(7) of this part, in excess of $200,000;
(4) Actual or constructive total loss of any vessel or MODU subject to inspection under 46 U.S.C. 3301; or
(5) Actual or constructive total loss of any self-propelled vessel, not subject to inspection under 46 U.S.C. 3301, of 100 gross tons or more.
(b) A discharge of oil of 10,000 gallons or more into the navigable waters of the United States, as defined in 33 U.S.C. 1321, whether or not resulting from a marine casualty.
(c) A discharge of a reportable quantity of a hazardous substance into the navigable waters of the United States, or a release of a reportable quantity of a hazardous substance into the environment of the United States, whether or not resulting from a marine casualty.
[CGD 86-067, 53 FR 47077, Nov. 21, 1988, as amended by CGD 97-057, 62 FR 51041, Sept. 30, 1997; USCG-2016-0748, 83 FR 11902, Mar. 19, 2018; USCG-2013-1057, 91 FR 39485, June 30, 2026]

## Nearby sections

- [46 CFR § 4.01-1 § 4.01-1 Scope of regulation.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.01-1.md)
- [46 CFR § 4.01-3 § 4.01-3 Reporting exclusion.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.01-3.md)
- [46 CFR § 4.03-0 § 4.03-0 Definitions that apply to this subpart.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-0.md)
- [46 CFR § 4.03-1 § 4.03-1 Marine casualty or accident.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-1.md)
- [46 CFR § 4.03-2 § 4.03-2 Serious marine incident.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-2.md)
- [46 CFR § 4.03-4 § 4.03-4 Individual directly involved in a serious marine incident.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-4.md)
- [46 CFR § 4.03-5 § 4.03-5 Medical facility.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-5.md)
- [46 CFR § 4.03-6 § 4.03-6 Qualified medical personnel.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-6.md)
- [46 CFR § 4.03-7 § 4.03-7 Chemical test.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-7.md)
- [46 CFR § 4.03-10 § 4.03-10 Party in interest.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-10.md)
- [46 CFR § 4.03-15 § 4.03-15 Commandant.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-15.md)
- [46 CFR § 4.03-20 § 4.03-20 Coast Guard district.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-20.md)
- [46 CFR § 4.03-25 § 4.03-25 District Commander.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-25.md)
- [46 CFR § 4.03-30 § 4.03-30 Investigating officer.](https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-30.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-46-4.03-2. Check the current official text before relying on it. Not legal advice.