Question 110 Deck Safety

The correct answer is B) 16 and 2174.5. The Global Maritime Distress and Safety System (GMDSS) designates channel 16 (156.800 MHz) and 2174.5 kHz as the on-scene communication channels. Channel 16 is the international voice distress, safety, and calling frequency, while 2174.5 kHz is the international GMDSS distress and safety frequency for digital selective calling (DSC). The other answer choices are incorrect because: A) Channel 70 is the GMDSS DSC calling and distress frequency, not the on-scene communication channel. C) Channel 24 is not a GMDSS-designated frequency. D) 2187.5 kHz is the GMDSS DSC distress and safety frequency, not the on-scene communication channel.