Question 240Navigation General

The correct answer is B) Diamond with a cross. This is the correct answer because the United States Coast Guard buoyage system uses a diamond shape with a cross inside to indicate a vessel-exclusion area. This type of buoy is used to mark off areas where vessels are prohibited from entering, such as near dams, power plants, or other restricted zones. The diamond shape with a cross inside is the standard symbol used to convey this information to mariners. The other answer choices are incorrect because a square (A), an open-faced diamond (C), and a circle (D) are used to mark different types of aids to navigation, but not a vessel-exclusion area.