Which COLREGs rule addresses Vessels RAM (Restricted in Their Ability to Maneuver)?

• A. Rule 18
• B. Rule 20
• C. Rule 12
• D. Rule 19

Answer: (D)

Vessels RAM are those whose ability to maneuver is restricted due to their operation or condition. Because they can’t easily alter course or speed, the rules allocate a specific responsibility to other vessels to avoid them. Rule 19 addresses this situation. It defines what RAM means and sets the obligation for other vessels to give way and take early, substantial action to stay well clear, since the RAM vessel may not be able to maneuver out of the way in time. In practice, you’d encounter RAM in cases like a tug towing, a vessel constrained by its draft, or a dredge at work, and you’d plan your passage to provide ample room and adjust as needed. The other rules handle more general crossing, meeting, or head-on scenarios, but they don’t specifically cover the limitations of RAM, which is why Rule 19 is the correct reference.