Question 5 GLI05 - Master or Mate of LT 200 GRT

The Correct Answer is C **Explanation for Option C (Correct):** The definition of a vessel "restricted in her ability to maneuver" (RAM) is explicitly defined in Rule 3(g) and Rule 18(a)(ii) of the International Regulations for Preventing Collisions at Sea (COLREGs), which apply to both international and inland waters (when adopted by local regulation). A RAM vessel is one that, **from the nature of her work**, is unable to keep out of the way of another vessel. This category includes vessels engaged in dredging, surveying, laying or recovering navigation marks, transferring persons or cargo while underway, etc. Their privileged status in the hierarchy of vessels is based entirely on the specific activities they are performing. **Why Option A ("her draft") is Incorrect:** A vessel whose movement is constrained by her draft is defined as a "vessel constrained by her draft" (CBD), as per Rule 3(h). While a CBD vessel is also given special privileges, it is a distinct category from a vessel "restricted in her ability to maneuver" (RAM). The inability of a CBD vessel to maneuver is due to the relationship between her draft and the available depth and width of the navigable water, not the nature of her work. **Why Option B ("some exceptional circumstances") is Incorrect:** While exceptional circumstances (like an unexpected mechanical failure) might cause any vessel to become temporarily unable to maneuver, this specific phrase does not define the category of a "restricted in her ability to maneuver" vessel. A vessel that loses power or steering due to breakdown is classified as "not under command" (NUC), as defined in Rule 3(f), not RAM. RAM status is conferred before the work begins and relates to the *planned nature* of the operation. **Why Option D ("a danger of navigation") is Incorrect:** "A danger of navigation" is a general hazard (such as a wreck, shoal, or severe weather) that all vessels must avoid. It does not define the status of a vessel that is restricted in her ability to maneuver. While avoiding a danger of navigation might require a vessel to change course, it is not the reason for being defined as "restricted in her ability to maneuver."