46 CFR 4.05-5: Contents of a marine casualty notice

Last reviewed: November 9, 2026

This section says what the notice required in § 4.05-1 must contain. The notice must identify the vessel, floating OCS facility, or MODU and its owner or agent, and describe the casualty, where it happened, injuries and property damage.

Applies toThe notice required in § 4.05-1, which concerns a vessel, floating OCS facility, or MODU involved in a casualty.

What it says

  1. The notice required in § 4.05-1 must include the name and official number of the vessel, floating OCS facility, or MODU involved.

    “must include the name and official number of the vessel, floating OCS facility, or MODU involved”
  2. The notice must include the name of the owner or agent.

    “the name of the owner or agent, the nature and circumstances of the casualty”
  3. The notice must include the nature and circumstances of the casualty and the locality in which it occurred.

    “the nature and circumstances of the casualty, the locality in which it occurred”
  4. The notice must include the nature and extent of injury to persons, and the damage to property.

    “the nature and extent of injury to persons, and the damage to property”

Common questions

What must a marine casualty notice include?

The notice must include the vessel's name and official number, the owner or agent's name, the nature and circumstances of the casualty, and its locality. It must also include the nature and extent of injury to persons and the damage to property.

“the nature and circumstances of the casualty, the locality in which it occurred, the nature and extent of injury to persons, and the damage to property”

Does the casualty notice need the vessel's official number?

Yes. The notice must include the name and official number of the vessel, floating OCS facility, or MODU involved.

“must include the name and official number of the vessel, floating OCS facility, or MODU involved”

The text of 46 CFR 4.05-5

Electronic Code of Federal Regulations (eCFR), current as of July 30, 2026 · Read it on eCFR

Substance of marine casualty notice

The notice required in § 4.05-1 must include the name and official number of the vessel, floating OCS facility, or MODU involved, the name of the owner or agent, the nature and circumstances of the casualty, the locality in which it occurred, the nature and extent of injury to persons, and the damage to property.

Sections it refers to

The plain-English explanation on this page was written with AI from the regulation text above and checked automatically before publishing: every quote appears in the text, every number comes from it, and a second model confirmed each statement adds nothing the text doesn't say. Regulation text current as of July 30, 2026. The regulation text governs. RegKnot is not affiliated with the U.S. Coast Guard.