What type of radio is commonly used for navigation and emergencies on boats?

• A. VHF radio; channel 16 for emergencies and calling.
• B. FM radio
• C. Shortwave radio
• D. Cell phone

Answer: (D)

The main idea tested is using the appropriate marine radio for safety and navigation. A VHF radio is the standard on boats because it’s designed for reliable line-of-sight communication over relatively short distances near shore and between vessels and shore stations. It includes a dedicated distress/calling channel that is monitored by coast guards, marinas, and other boats, allowing fast hailing and emergency notification when help is needed. Modern marine radios often feature DSC (digital selective calling) and can be tied to GPS for quick location transmission, further improving safety in an emergency.

In contrast, a land-based FM radio isn’t designed for marine use and won’t reach distant vessels or coast stations. Shortwave radios can communicate long distances, but they aren’t the routine, reliable choice for navigation or daily emergencies at sea and require more specialized setup. A cell phone depends on cellular coverage, which is typically unavailable at sea and unreliable during emergencies. So the best answer is a VHF radio for navigation and emergencies on boats.