Which of the following is a clue that a boat may be in distress?

• A. A calm sea with no signals
• B. Flashing lights, including mirrors
• C. A flag at half-mast
• D. Sunrise over calm water

Answer: (B)

Recognizing distress signals is about spotting intentional signals people use to request help at sea. Flashing lights and mirrors are classic distress signals because they grab attention over a distance, especially if someone is unable to communicate by voice or radio. Using a mirror to reflect sunlight toward nearby vessels or shore is a deliberate, widely understood cue that someone needs assistance, making this option the clearest sign of trouble.

The other scenarios don’t indicate an emergency in the same way. A calm sea with no signals could simply be normal conditions. A flag at half-mast might convey mourning or a specific non-emergency message, not an urgent call for help. Sunrise over calm water is a normal, safe situation with no indication of distress.

If you ever observe distress signals, treat it as a priority: maintain vigilance, follow proper safety and communication procedures, and assist or contact rescue authorities as appropriate.