👉 Sirens are a type of warning signal that is emitted by ships, submarines, and other vessels to warn other ships or vessels of their presence. They use a combination of sound, color, and flashing lights to alert ships of approaching threats.
The primary function of sirens is to provide visual cues for the crew on board the vessel, as well as to give them time to react to potential dangers. Sirens can be used in a variety of situations, including at sea, on land
sirens