What must be investigated
A marine safety investigation is required for every 'very serious marine casualty', and flag States consider investigating other casualties and incidents where useful lessons may be drawn. The investigation is intended to be independent of, and separate from, any criminal or liability proceedings.
Evidence and findings
Effective investigation depends on preserving evidence early, voyage data, records, witness accounts, and analyzing it rigorously to root cause. Findings and safety recommendations are shared so that the wider industry can act on them.
Why owners should care
Owners and managers are far better served by their own prompt, rigorous internal investigation than by waiting for events to unfold. Establishing the facts quickly, with technically defensible analysis, protects both safety and the company's position.