Question 236 Deck Safety

The correct answer is C) 16. Channel 16 (156.800 MHz) is the international distress, safety, and calling frequency used by the U.S. Coast Guard and other maritime vessels. This frequency is designated for emergency communications, safety signals, and initial contact between vessels. It is the primary channel that must be monitored at all times by vessels subject to the Federal Communications Commission's marine radio regulations. The other answer choices are incorrect because they do not correspond to the designated national distress, safety, and calling frequency. Channel 22 is used for communications with the Coast Guard, channel 18 is a general working frequency, and channel 13 is designated for navigational purposes.