Question 142Navigation General

The correct answer is B) Western. The topmark in illustration D024NG represents a Western cardinal mark, which is a single black sphere. According to the U.S. Coast Guard's Navigation Rules and Regulations, a single black sphere is the topmark that identifies a Western cardinal mark, which indicates that the safest water is to the west of the mark. The other answer choices are incorrect because a Southern cardinal mark has two black spheres, an Eastern cardinal mark has three black spheres, and a Northern cardinal mark has a single black cone point up.