What would be an indication of a vessel engaged in public safety activity?

A vessel engaged in public safety activity, such as a law enforcement or emergency response vessel, typically uses specific lighting to convey its status to other mariners. The indication of alternating red and yellow lights is widely recognized as a signal for vessels involved in public safety operations. These colors are distinct and designed to alert nearby vessels that the vessel is performing critical functions related to safety and may require special consideration or maneuvering space.

Using lights in this manner enhances visibility and communicates to other boaters the nature of the vessel's activities. This usage is governed by regulations and is critical for maintaining safety on the water. The alternating pattern of red and yellow lights draws attention and distinguishes these vessels from others that may be present, thus helping to prevent accidents or misunderstandings.