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VHF RADIO CHANNEL SELECTION Distress or Safety Only ( not hailing ) 16 Ship to Ship 9, 68, 69, 71, 72, 78 Ship to Shore 9, 68, 69, 71, 78 Marine Operator, Great Lakes 24, 25, 26, 27, 28, 84, 85, 86, 87 Coast Guard ( make initial contact on 16 ) 22 Bridge to Bridge ( Navigation ) 13, 67 Digital Selective Calling only 70 P |