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Ship Ship Channel Transmit Receive Number MHz MHz 01A Use Port Operations and Commercial, VTS. 156.050 156.050 Available only in New Orleans / Lower Mississippi area. 156.250 156.250 Port Operations or VTS in the Houston, New Orleans and Seattle areas. 05A 06 07A 08 09 10 11 12 156.300 156.300 Intership Safety 156.350 156.350 Commercial 156.400 156.400 Commercial (Intership only) 156.450 156.450 Boater Calling. Commercial and Non-Commercial. 156.500 156.500 Commercial 156.550 156.550 Commercial. VTS in selected areas. 156.600 156.600 Port Operations. VTS in selected areas. Intership Navigation Safety (Bridge-to-bridge). Ships >20m length 156.650 156.650 maintain a listening watch on this channel in US waters. 156.700 156.700 Port Operations. VTS in selected areas. -- 156.750 Environmental (Receive only). Used by Class C EPIRBs. 13 14 15 16 International Distress, Safety and Calling. Ships required to carry radio, USCG, and 156.800 156.800 most coast stations maintain a listening watch on this channel. 156.850 156.850 State Control 156.900 156.900 Commercial 156.950 156.950 Commercial 157.000 161.600 Port Operations (duplex) 157.000 157.000 Port Operations 157.050 157.050 U.S. Coast Guard only Coast Guard Liaison and Maritime Safety 157.100 157.100 Information Broadcasts. Broadcasts announced on channel 16. 157.150 157.150 U.S. Coast Guard only 157.200 161.800 Public Correspondence (Marine Operator) 17 18A 19A 20 20A 21A 22A 23A 24 25 26 27 28 63A 65A 66A 67 68 69 70 71 72 73 74 77 78A 79A 80A 81A 82A 83A 84 85 86 87 88A AIS 1 AIS 2 157.250 161.850 Public Correspondence (Marine Operator) 157.300 161.900 Public Correspondence (Marine Operator) 157.350 161.950 Public Correspondence (Marine Operator) 157.400 162.000 Public Correspondence (Marine Operator) Port Operations and Commercial, VTS. 156.175 156.175 Available only in New Orleans / Lower Mississippi area. 156.275 156.275 Port Operations 156.325 156.325 Port Operations Commercial. Used for Bridge-to-bridge 156.375 156.375 communications in lower Mississippi River. Intership only. 156.425 156.425 Non-Commercial 156.475 156.475 Non-Commercial 156.525 156.525 Digital Selective Calling (voice communications not allowed) 156.575 156.575 Non-Commercial 156.625 156.625 Non-Commercial (Intership only) 156.675 156.675 Port Operations 156.725 156.725 Port Operations 156.875 156.875 Port Operations (Intership only) 156.925 156.925 Non-Commercial 156.975 156.975 157.025 157.025 157.075 157.075 Commercial. Non-Commercial in Great Lakes only Commercial. Non-Commercial in Great Lakes only U.S. Government only - Environmental protection operations. 157.125 157.125 U.S. Government only 157.175 157.175 U.S. Coast Guard only 157.225 161.825 Public Correspondence (Marine Operator) 157.275 161.875 Public Correspondence (Marine Operator) 157.325 161.925 Public Correspondence (Marine Operator) 157.375 157.375 Public Correspondence (Marine Operator) 157.425 157.425 Commercial, Intership only. 161.975 161.975 Automatic Identification System (AIS) 162.025 162.025 Automatic Identification System (AIS) (This chart is also available in text or Excel versions) VHF Maritime Spectrum Chart NOAA Weather Radio Frequencies Channel WX1 WX2 WX3 WX4 WX5 WX6 WX7 Frequency (MHz) 162.550 162.400 162.475 162.425 162.450 162.500 162.525 See the NOAA Weather Radio Homepage for more information. Additional Information, Frequencies, & Charts

Frequencies are in MHz. Modulation is 16KF3E or 16KG3E.

Note that the letter \indicates simplex use of the ship station transmit side of an international duplex channel, and that operations are different than international operations on that channel. Some VHF transceivers are equipped with an \channels are generally only used in the United States, and use is normally not recognized or allowed outside the U.S. The letter \simplex use of the coast station transmit side of an international duplex channel. The U.S. does not currently use \communications in this band.

Boaters should normally use channels listed as Non-Commercial. Channel 16 is used for calling other stations or for distress alerting. Channel 13 should be used to contact a ship when there is danger of collision. All ships of length 20m or greater are required to guard VHF channel 13, in addition to VHF channel 16, when operating within U.S. territorial waters. Users may be fined by the FCC for improper use of these channels. See Marine Radio Watch Requirements for further information.

See the Federal Communications Commission's Marine VHF Radio Channels page. The FCC page does not include frequency information, but has more complete information on the use of the channels. If you notice any

discrepancy between these two lists, please notify us at cgcomms@uscg.mil.

Also available are International VHF Maritime Radio Channels and Frequencies, Narrowband VHF Maritime Channels and Frequencies, Radio Information for Boaters , and U.S. Coast Guard VHF Distress and Safety Coverage