What types of distress signals are used visually?

• A. Air horns.
• B. Flags only.
• C. Flares or other approved visual distress signals.
• D. Radio calls on Channel 16.

Answer: (C)

Visual distress signals are signals that can be seen by others, used to attract attention when you’re in trouble. The best answer recognizes that flares or other approved visual distress signals cover the legitimate visual options — from handheld red flares to parachute rockets and certain electronic devices that meet approval. Air horns and other devices that rely on sound do not fulfill the “seen” requirement, and radio calls on Channel 16 are a voice communication method, not a visual signal. While flags can be seen, there are multiple approved visual signals beyond flags, so the broad category of flares or other approved visual distress signals is the correct fit. Keep in mind that these signals must be used according to regulations and kept ready for use.