A material damage in relation to a marine casualty means:
.1 damage that:
.1.1 significantly affects the structural integrity, performance or operational characteristics of marine infrastructure or a ship; and
.1.2 requires major repair or replacement of a major component or components; or
.2 destruction of the marine infrastructure or ship.
Source: IMO Resolution MSC.255(84), Code of the International Standards and Recommended Practices for a Safety Investigation into a Marine Casualty or Marine Incident (Casualty Investigation Code), 16 May 2008, International Maritime Organization. Regulatory Guidance