Anchor Ball Meaning in Sailing

An anchor ball is a solid black sphere displayed in the front of a boat. This visual signal tells other nearby vessels that the boat remains attached to the seafloor. International maritime rules require this signal during daylight hours to prevent accidental collisions. A sailor hangs the anchor ball from the forestay after lowering the heavy metal anchor. This shape must be visible from all directions to warn passing boat captains. Using this signal helps other mariners decide how to steer around a stationary vessel. Proper display of the ball ensures the boat follows legal safety requirements in a harbor. This simple tool communicates a clear message without using any electronic or radio power.