What channel does the Coast Guard use for communication?

The Coast Guard primarily uses channel 22A for communication. This channel serves as a working frequency for the Coast Guard to communicate with vessels and other stations. It is utilized for routine communications, as well as for coordinating search and rescue operations and other emergency situations.

Channel 16 is also commonly known as the international distress frequency, primarily used for emergency situations; while channel 13 is significant for bridge-to-bridge communication for navigational safety. Channel 72, on the other hand, is generally used for recreational boaters but is not designated specifically for Coast Guard communication.

Hence, channel 22A is the correct choice as it is specifically assigned for operational communications involving the Coast Guard, allowing for effective and organized exchanges of information.