What event is NOT included in a notice of marine casualty?

The event that is not included in a notice of marine casualty is an injury requiring minor first aid. According to regulations, a marine casualty encompasses serious incidents that have significant implications for safety and the environment. Notifications are typically required for events that threaten or damage the vessel's operations, crew, or the marine environment.

Minor injuries that only necessitate first aid do not rise to the level of impact that would warrant a formal report as per marine casualty reporting standards. In contrast, events such as loss of main propulsion, unintended grounding, and fire on board pose significant risks to the vessel, crew, and surrounding waters and therefore must be reported as marine casualties. These latter events can lead to dangerous situations and require oversight and intervention, thus highlighting their importance in maritime safety regulations.