46 CFR §4.03-2

1. (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. (1)One or more deaths;
   2. (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. (3)Damage to property, as defined in § 4.05-1(a)(7) of this part, in excess of $200,000;
   4. (4)Actual or constructive total loss of any vessel subject to inspection under 46 U.S.C. 3301; or
   5. (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.
2. (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.
3. (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.