Question 658 Rules of the Road

The correct answer is D) one ball near the foremast and one ball at each fore yard. This is the correct answer because under both the International and Inland Navigation Rules, a vessel engaged in mine clearance operations is required to exhibit this shape to indicate its restricted ability to maneuver. The ball shapes near the foremast and at each fore yard specifically signify that the vessel is restricted in its ability to change course or stop quickly, as it is conducting hazardous operations. The other answer choices do not correctly reflect the shape requirements for a vessel engaged in mine clearing operations as specified in the navigation rules.