82. Which channel is utilized for the required bridge-to-bridge watch?

Channel 13 is the designated VHF-FM frequency for the required bridge-to-bridge radiotelephone watch in most U.S. inland waters, as stipulated in 33 CFR Part 26. Channel 16 is for distress and safety calls, Channel 70 is for digital selective calling, and a vessel's working frequency is not a designated bridge-to-bridge channel.