The Investigations That Follow a Vessel Collision
Two federal tracks usually open after a serious crash, and neither one is a lawsuit. The first belongs to the Coast Guard. Because collisions, allisions and groundings fall within the marine casualty definition above, the owner, agent, master, operator or person in charge must notify the nearest Coast Guard unit "immediately after addressing resultant safety concerns" for listed casualties, including a loss of life or "An injury that requires professional medical treatment (treatment beyond first aid)" that, for a person employed aboard a vessel in commercial service, leaves the person unfit for routine duties, under 46 C.F.R. § 4.05-1. A written report on Form CG-2692 must follow "within 5 days," with addenda that include a personnel casualty addendum and an involved persons and witnesses addendum, under 46 C.F.R. § 4.05-10.
The second track belongs to the National Transportation Safety Board. Under 49 U.S.C. § 1131(a)(1)(E), the Board "shall investigate or have investigated" and establish "the facts, circumstances, and cause or probable cause of" a major marine casualty (except one involving only public vessels) in United States waters or involving a U.S. vessel. According to the NTSB's Office of Marine Safety, the US Coast Guard "conducts preliminary investigations of all marine casualties and notifies the MS when an event qualifies as a major marine casualty." After investigating each major marine casualty, the office "releases an investigation report with a probable cause, which may include safety recommendations."
These reports are not verdicts. The Coast Guard's own rule, 46 C.F.R. § 4.07-1(b), says its investigations are for promoting safety "and are not intended to fix civil or criminal responsibility." Congress went further for Coast Guard reports: under 46 U.S.C. § 6308(a), "no part of a report of a marine casualty investigation conducted under section 6301 of this title, including findings of fact, opinions, recommendations, deliberations, or conclusions, shall be admissible as evidence or subject to discovery in any civil or administrative proceedings, other than an administrative proceeding initiated by the United States." That provision speaks to Coast Guard reports; a separate federal law likewise bars admitting any part of an NTSB accident report in a civil action for damages.
For a worker who was interviewed, this can feel strange: the official account may exist, yet it cannot simply carry a civil case. Seamen also have legal protection here. Under 46 U.S.C. § 2114, a person may not discharge or discriminate against a seaman because the seaman cooperated with a safety investigation by the Secretary or the NTSB, or furnished information about a marine casualty, among other listed reasons.