When is a special flashing light exhibited?

A special flashing light is typically exhibited at the forward end of a vessel being pushed ahead, such as on the Great Lakes. This specific light serves to indicate the presence of a towing arrangement, ensuring that other vessels recognize the operational status of the pushing vessel and the one being towed. It is crucial for maintaining safe navigation by clearly signaling the configuration and movements of the vessels involved.

The other scenarios do not align with the regulations governing the use of special flashing lights. While vessels may exhibit various lights and shapes during the night or in poor visibility, these do not pertain specifically to special flashing lights. The function of such lights is very particular to the context of towing operations, making it essential for safety on the water.