46 CFR § 4.03-2 - Serious marine incident.

---
identifier: "/us/cfr/t46/s4.03-2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 4.03-2 - Serious marine incident."
title_number: 46
title_name: "Shipping"
section_number: "4.03-2"
section_name: "Serious marine incident."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "A"
subchapter_name: "PROCEDURES APPLICABLE TO THE PUBLIC"
part_number: "4"
part_name: "MARINE CASUALTIES AND INVESTIGATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "14 U.S.C. 102; 43 U.S.C. 1333; 46 U.S.C. 2103, 2303A, 2306, 6101, 6301, 6305, 70034; 50 U.S.C. 198; DHS Delegation 00170.1, Revision No. 01.4. Subpart 4.40 issued under 49 U.S.C. 1131(a)(1)(E)."
regulatory_source: "CGD 74-119, 39 FR 33317, Sept. 17, 1974, unless otherwise noted."
cfr_part: "4"
---


# 4.03-2 Serious marine incident.

The term *serious marine incident* includes the following events involving a vessel in commercial service:

(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, 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 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]