In what situation must a fishing vessel display a specific dayshape?

A fishing vessel is required to display a specific dayshape when it is using nets, lines, or trawls. This requirement is in place to alert other vessels to the presence of fishing gear and to indicate that the fishing vessel may not be maneuverable in the same way as other types of vessels.

The dayshape for a fishing vessel engaged in such activities typically consists of two cone-shaped shapes, with the apex pointing downward. By displaying this dayshape, the fishing vessel communicates its operational status to nearby vessels, enhancing safety and reducing the risk of collisions or entanglements with fishing gear.

In contrast, when a fishing vessel is at dock or during stormy weather, it does not need to display the specific dayshape associated with active fishing. The situation in open water also does not necessitate a specific dayshape unless the vessel is actively engaged in fishing activities that require its nets, lines, or trawls. Understanding these regulations is crucial for navigational safety and compliance with maritime laws.