How to Guide

Ch
No.
USA INT CAN TX RX Channel Type/Name
13 x x x 156.650 156.650
Intership Navigation Safety
(Bridge-to-Bridge). Ships >20m
length maintain a listening watch
on this channel in US waters.
14 x x x 156.700 156.700
Port Operation, VTS in some
areas
15 x Inhibit 156.750 Environmental (Receive Only)
15 x x 156.750 156.750
Inter-ship, Port Operations,
Commercial, Non-Commercial,
Ship Movement (1 Watt Only)
16 x x x 156.800 156.800 Distress, Safety, Calling
17 x x x 156.850 156.850
State and Local Govt Maritime
Control (1 Watt Only)
18 x 156.900 161.500 Port Operations, Ship Movement
18A x x 156.900 156.900
Commercial
Canada: Towing West Coast
19 x 156.950 161.550 Commercial
19A x x 156.950 156.950 Commercial
20 x x x 157.000 161.600
Port Operations
Canada: 1 Watt Only
20A x 157.000 157.000 Port Operation
21 x 157.050 161.650 Port Operations
21A x x 157.050 157.050 Coast Guard Only
21B x INHIBIT 161.650
Canadian CG Continuous Marine
Broadcast (CMB) Service
22 x 157.100 161.700 Port Operations, Ship Movement
22A x x 157.100 157.100
US and Canadian Coast
Guard Liaison and Airtime
Safety Information Broadcasts
Announced on Channel 16
23 x x 157.150 161.750
Public Correspondence (Marine
Operator)
23A x 157.150 157.150 US Coast Guard Only
23B x INHIBIT 161.750
Canadian CG Continuous Marine
Broadcast (CMB Service
24 x x x 157.200 161.800
Public Correspondence (Marine
Operator)
25 x x x 157.250 161.850
Public Correspondence (Marine
Operator)
25B x INHIBIT 161.850
Canadian CG Continuous Marine
Broadcast (CMB) Service
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