Question 632 Rules of the Road

The correct answer is A) a diamond shape. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, an inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters or greater, is required to display a diamond shape. This diamond shape is used to indicate the presence of the towed object, which may not be easily visible to other vessels. The other options are incorrect because: B) two red lights in a vertical line is the signal for a vessel restricted in its ability to maneuver, C) a black ball is the signal for a vessel at anchor, and D) yellow lights at each end are not a required signal for a towed object.