VHF Channel Numbers
VHF channels are identified by channel numbers. In the United States, these channel numbers range from 1 to 88, with some additional channels designated for specific purposes.
Channel 16
VHF Channel 16 is the international distress, safety, and calling channel. It is used for emergency communications and initial contact with other vessels or shore stations. All vessels equipped with a VHF radio are required to monitor Channel 16.
Channel 13
VHF Channel 13 is used to contact a ship when there is danger of collision. All ships with a length of 20 meters or greater are required to monitor Channel 13, along with Channel 16, when operating within U.S. territorial waters.
Non-Commercial Channels
Boaters should normally use channels listed as non-commercial for general communications. These channels are designated for non-commercial use and are less likely to be congested.
VHF Digital Small Message Services (VDSMS)
VDSMS allows for the transmission of short digital messages in accordance with RTCM Standard 12301.1. It is permitted on certain VHF channels.
Sources
FAQs
What are VHF channels?
VHF channels are frequencies used for communication between vessels and shore stations. They are identified by channel numbers, which range from 1 to 88 in the United States.
What is Channel 16?
Channel 16 is the international distress, safety, and calling channel. It is used for emergency communications and initial contact with other vessels or shore stations.
What is Channel 13?
Channel 13 is used to contact a ship when there is danger of collision. All ships with a length of 20 meters or greater are required to monitor Channel 13, along with Channel 16, when operating within U.S. territorial waters.
What are non-commercial channels?
Non-commercial channels are VHF channels that are designated for non-commercial use. Boaters should normally use these channels for general communications.
What is VHF Digital Small Message Services (VDSMS)?
VDSMS is a service that allows for the transmission of short digital messages via VHF channels. It is permitted on certain VHF channels.
How many VHF channels are there?
In the United States, there are 88 VHF channels.
What is the range of a VHF channel?
The range of a VHF channel depends on a number of factors, including the height of the antenna, the terrain, and the presence of obstructions. However, a typical range for a VHF channel is 5 to 10 miles.
What type of modulation is used on VHF channels?
VHF channels use frequency modulation (FM).