What is the difference between a Coast Guard investigation and an NTSB investigation?
Marine accident and incident investigations are conducted by the NTSB with the sole purpose of determining probable cause(s) and using those results to ascertain measures that would best tend to prevent similar accidents in the future. These fact finding proceedings are conducted using the party system without adversity and are not conducted for the purpose of determining the rights or liabilities of any person, company or corporation. Although a Coast Guard investigation shares the same purpose of determining probable cause(s) and using the investigative results as a basis to formulate preventative recommendations, their investigation will determine whether or not there is evidence of any misconduct, negligence or willful violation of law on behalf of an involved party which may warrant administrative, civil or criminal proceedings. More information can be found in 49 CFR, Part 831, Accident/Incident Investigation Procedures, and 46 CFR, Part 4, Marine Casualties and Investigations.
