Signaling Devices
Signal tubes help you to identify your location at the surface.
There are several accessories available for getting others' attention underwater and on the surface.
Surface signals include whistles, noisemakers, inflatable signaling tubes, and when necessary, splashing. While underwater you can use a light, tap the butt of your knife against your tank, or use an elastic tank banger.
Signaling devices can be either visual or auditory. Visual signals are important on the surface where rescuers may have difficulty locating you. Underwater, auditory signals are usually the most reliable.
Surface signals include whistles, noisemakers, inflatable signaling tubes, and when necessary, splashing. While underwater you can use a light, tap the butt of your knife against your tank, or use an elastic tank banger.
Signaling devices can be either visual or auditory. Visual signals are important on the surface where rescuers may have difficulty locating you. Underwater, auditory signals are usually the most reliable.
