Maryland Boating Certification Practice Exam

In an emergency at sea, which frequency should you use to reach the Coast Guard?

1. Channel 9

2. Channel 16

3. Channel 21

4. Channel 22

The correct answer is: Channel 16

Using Channel 16 is the appropriate choice for reaching the Coast Guard in an emergency at sea. Channel 16 is specifically designated as the international distress frequency for VHF (Very High Frequency) communications. It is monitored continuously by the Coast Guard and other vessels, ensuring that emergencies are responded to as quickly as possible. When a vessel is in distress, broadcasting a Mayday call on Channel 16 is the standard procedure, as this frequency is recognized globally for emergencies. It allows anyone within range, including other boats and shore stations, to hear the distress call and assist if they can. In contrast, the other channels such as Channel 9, Channel 21, and Channel 22 serve different purposes. Channel 9 is often used for inter-boat communications and non-emergency transmissions; Channel 21 and Channel 22 may be designated for specific marine services or local communications but are not intended for distress calls. Therefore, for urgent situations where communication with the Coast Guard is essential, Channel 16 is the correct frequency to use.