Which rule contains general definitions including Not Under Command and RAM?

• A. Rule 8.
• B. Rule 5 Look-out.
• C. Rule 19 Head-on.
• D. Rule 3 (General Definitions) and related rules for Not Under Command, RAM, and other statuses.

Answer: (D)

General definitions and statuses such as Not Under Command and RAM are defined in Rule 3, with the related definitions used throughout the COLREGs. Rule 3 sets out the basic terms and how they apply to all the other rules, so knowing these definitions is essential for interpreting any situation on the water. Not Under Command describes a vessel that, due to an exceptional circumstance, cannot comply with the Rules, so other vessels must take appropriate action to avoid it. RAM, or restricted in ability to maneuver, refers to a vessel that can navigate but has limited maneuverability and may require other vessels to take caution or give way, depending on the situation. The other options cover specific topics—look-out, actions to avoid collision, and head-on situations—but they do not define these general statuses. That’s why the option pointing to Rule 3 and the related definitions is the best answer.