Question 560 Rules of the Road

The correct answer is B) A tug with a tow exceeding 200 meters which limits her ability to maneuver. The day signal shown in illustration D022RR is an all-round red light, which indicates a vessel "not under command" or a vessel "with restricted ability to maneuver" as per the International Rules of the Road. For a tug with a tow exceeding 200 meters, this signal would be appropriate, as the length of the tow would limit the tug's ability to maneuver. The other options are incorrect because they do not match the specific meaning of the day signal depicted in the illustration. A dredge, a fishing vessel, or a vessel engaged in underwater operations would not display this particular signal.