🔍 Key Concepts

• 46 CFR Part 4 – Marine Casualties and Investigations (when a report to the Coast Guard is REQUIRED) • Definitions of a marine casualty, serious marine incident, and reportable marine casualty • Thresholds for property damage, injury/death, and groundings/allisions that trigger notification

💭 Think About

• For each choice, ask: does this situation meet any of the definitions that REQUIRE immediate notice to the Coast Guard under 46 CFR Part 4? • Compare events that involve death, serious injury, or significant property damage with those that may be minor operational issues. • Think about whether a brief, easily remedied situation with no damage or injury is treated the same as one involving death, hospitalization, or major loss.

✅ Before You Answer

• Verify the property damage dollar threshold that makes an incident reportable to the Coast Guard. • Check which events always require notification: death, specific levels of injury (e.g., beyond first aid / time lost from work), and certain types of groundings, collisions, or allisions. • Confirm whether a temporary grounding with no damage or injury automatically requires notification, or only under specific conditions like damage, environmental impact, or delay.