4.40-10—Preliminary investigation by the Coast Guard.
(2)
The casualty involves a public and a non-public vessel and at least one fatality or $75,000 in property damage; or
(3)
The casualty involves a Coast Guard and a non-public vessel and at least one fatality or $75,000 in property damage; or
(4)
The casualty is a major marine casualty which involves significant safety issues relating to Coast Guard safety functions, e.g., search and rescue, aids to navigation, vessel traffic systems, commercial vessel safety, etc.