(Supplied by the North Pacific Marine Radio Council and U.S. Coast Guard)

Guidelines for the use of marine VHF radio

VHF equipment should be used correctly and in accordance with FCC radio regulations. If you call on Channel 16, before speaking, find a clear working channel to switch to, and prepare remarks to ensure that no time is wasted on a busy channel. When calling, state the name of the ship or coast station you are addressing (twice in heavy traffic conditions or if the connection is weak) followed by the phrase, "this is…" and the ship's name twice, followed by the call sign. In answering, reply using the ship's name. If necessary to switch channels, so indicate and wait for acknowledgement before carrying out the change. If you understand a transmission say, "Message received." The end of a communication is indicated by the word "out."

Example of proper calling

Blue Duck: "Mary Jane, this is Blue Duck, waz1234."

Mary Jane: "Blue Duck, Mary Jane."

Blue Duck: "Reply 68."

(USCG website information: www.navcen.uscg.gov/marcomms/boater.htm

VHF Radio Checks Moved to VHF Channel 09

If you’ve been calling the Coast Guard on VHF Channel 16 for a radio check, use VHF Channel 09 instead. Channel 16 is not for the purpose of radio checks. This from a Coast Guard communication dated October 19, 2020.

For a Digital Selective Calling (DSC) test call, do the following:
Enter the US Coast Guard’s coast station group identity “003669999” into the radio’s DSC memory. Once entered and stored, follow these steps to make a DSC test call:
1. Select “Test Call” from the radio’s DSC menu
2. Select the USCG number entered into memory
3. Transmit the call

The information sheet says the radio display should indicate when the test call is acknowledged and display the acknowledging station’s nine-digit identity. That identity may be different from the group identity previously entered into memory. Marine radios transmitting and successfully receiving a response from a DSC test call can be expected to operate acceptably in the voice mode as well.

Sea Tow Automated Radio Check Discontinued on October 2, 2020.
Source:  https://mariners.coastguard.blog/2020/10/19/performing-a-vhf-marine-radio-check/

Channel 16

Used only for distress and urgency traffic, safety calls and contacting other stations. Listen first to ascertain that the channel is clear. Do not transmit if a SEELONCE MAYDAY or SEELONCE DISTRESS is declared. Keep communication short. Do not repeat a call to the same station more than once every two minutes and wait at least fifteen minutes after the third try. Do not call marinas for moorage on 16—use 66A. In US waters pleasure craft are authorized to use Channel 9 as a calling channel.

Channel 13

is designated "bridge to bridge" and is intended for use between the bridges of vessels over 20 meters in length to reduce the chance of accidents. Channel 13 may only be used to transmit information necessary for the safe navigation of vessels. It is the backup channel for the Puget Sound Vessel Traffic Service.

Channel 14

is the Vessel Traffic Service channel in Puget Sound. Channel 5A is used in the US waters of Admiralty Inlet, the Strait of Juan de Fuca and San Juan Islands. These channels are used by vessels required to participate in the PSVTS, but all vessels operating in commercial traffic areas are encouraged to monitor them to become aware of major vessel movements and hazardous conditions. Emergency communication will be accepted from any vessel by the Seattle Traffic watch. Use low power (1 watt).