What signaling device is used during rescue operations in life rafts?

The signaling device typically used during rescue operations in life rafts is the signal mirror. This device is effective because it can reflect sunlight, creating a bright beam that can easily catch the attention of aircraft or ships in the vicinity. Signal mirrors are lightweight, durable, and can be used multiple times, making them practical for emergency situations where visual signaling is crucial.

While flares, radio beacons, and dye markers have their own specific applications in rescue operations, they may not be as universally accessible or practical in all scenarios involving life rafts. Flares are often used for immediate distress signaling but can generate smoke or present a fire hazard in certain conditions. Radio beacons can provide location data over greater distances, but they require power sources and may not always be included in life raft equipment. Dye markers are useful for visual identification of a location, particularly in water, but they do not signal over long distances like a signal mirror can. Thus, the signal mirror stands out as an essential and effective tool for signaling during rescue operations from life rafts.