Question 522 Rules of the Road

The correct answer is C) towed astern. According to the International and Inland Navigation Rules, if a towing vessel and her tow are severely restricted in their ability to deviate from their course, they may show additional lights if the tow is being towed astern. This is because a tow being pushed ahead or towed alongside is generally less restricted in its ability to maneuver compared to a tow being towed astern. The additional lights help indicate the restricted maneuverability of the towing vessel and tow, which is important for other vessels to be aware of in order to avoid collision. The other options, A) pushed ahead and B) towed alongside, are incorrect because these configurations are generally less restricted in their ability to deviate from their course compared to a tow being towed astern.