What signal indicates that a vessel is restricted in its ability to maneuver?

The signal that indicates a vessel is restricted in its ability to maneuver is represented by a ball, diamond, ball configuration shape. This specific arrangement—consisting of a ball at the top, a diamond in the middle, and another ball at the bottom—serves to inform other vessels that the one displaying it is constrained by its operational circumstances. This could include situations involving vessels working in fishing, dredging, or when underway with limited maneuverability due to their draft or other operational limitations.

Maritime navigation rules emphasize the importance of recognizing this signal to ensure safe and effective navigation, as other vessels need to give way to the indicated vessel. This awareness helps prevent accidental collisions and allows for smoother traffic management in busy waterways where vessels with limited maneuverability are often present.