🔍 Key Concepts

• Rule 3 – Definitions in the Navigation Rules, especially the definition of a vessel restricted in her ability to maneuver (RAM) • The difference between normal operating conditions (like bad weather or steering failure) and work-related operations that limit maneuverability • How the Rules separately define vessels not under command (NUC) versus restricted in ability to maneuver (RAM)

💭 Think About

• Look at each choice and ask: is this describing a type of work or operation the vessel is engaged in, or is it describing a temporary problem/condition? • Think about which situations the Rules already cover with other specific definitions (for example, a vessel that has lost steering). Would that still fall under this same category? • Check whether the condition in the answer is something that can be anticipated and marked (lights/shapes) because of the nature of the vessel’s work, or is it more like an unexpected casualty?

✅ Before You Answer

• Verify the exact wording of the definition of “vessel restricted in her ability to maneuver” in Rule 3 of the Navigation Rules • Confirm that loss of steering and other breakdowns are treated under a different definition (vessel not under command) and not normally as RAM • Make sure the option you pick clearly ties to the phrase “from the nature of her work” used in the official definition, and not to weather or random casualties