The black ball day shape must have a minimum diameter of what?

The black ball day shape must have a minimum diameter of what?

• A. 0.3 meters
• B. 0.6 meters
• C. 0.9 meters
• D. 1.2 meters

Answer: (B)

The day shape that signals a vessel is anchored or aground is a single black ball, and it must be shown at a size that is clearly visible. The rules specify a minimum diameter of 0.6 meters for that black ball. Larger sizes are allowed if feasible, but 0.6 meters is the required minimum. A smaller size (like 0.3 meters) wouldn’t meet the standard, while larger options (0.9 or 1.2 meters) exceed the minimum but aren’t the minimum value the question asks for.

The day shape that signals a vessel is anchored or aground is a single black ball, and it must be shown at a size that is clearly visible. The rules specify a minimum diameter of 0.6 meters for that black ball. Larger sizes are allowed if feasible, but 0.6 meters is the required minimum. A smaller size (like 0.3 meters) wouldn’t meet the standard, while larger options (0.9 or 1.2 meters) exceed the minimum but aren’t the minimum value the question asks for.