Radio Use and Communication at Sea

  •  13/02/2019
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The general rules and manners of the use of radio, which are the main communication element in maritime affairs, are clearly defined and they must be known to the boat captain or owners who use the radio.

The device is usually mounted near the map desk and operates with an on-off button. In some instances, this can also be the sound adjustment button (1). The Rx and Tx on the screen are activated if the call is received and received (2). Incoming calls are heard passively through the speaker, and to make the call, you need to speak by pressing the bass speak button on the handset device. (3) Meanwhile, tx writing is activated on the screen (4). To select a channel, there is a button (6) on the device (5) and sometimes on the microphone. The selected channel appears on the screen (14).   Channel 16 has shortcut keys (7 and 8). It is possible to control noises with a button with squelch written on it (9). It is possible to adjust the light of the screen with the F dimer key (10). Depending on the channels used, 1 or 25Watt output power is indicated on the screen (12 and 13). Likewise, whether the selected channel is simplex or duplex (16 and 17) is also indicated on the screen.

The use of radios in Turkish waters is subject to the KMT (Short Distance Radio) license issued by the Ministry of Transport.

While the radio was being used, the 16th century was used. the channel must be open all the time.


16 channels should be listened to for 2 minutes before making a call, any danger, PAN PAN and no safety call should be determined

Calls don't last more than a minute,

If the call is not answered, it is expected at least 2 minutes to repeat,

The call is repeated no more than 3 times,

On the third day of the call. at least 5 minutes after the recurrence.


Standard call 16. The boat name of the other side before the canal (up to the maximum) is repeated 3 times, then the name of the boat is said. The station that received the call indicates that it is "listening" after its own name.

Radio traffic responsibility in communication between ships is on the ship where the call is made.

It calls the caller ship to a channel used for intership communication, such as 15 or 17.


-Elif, Elif. This is Lotus.

-Elif listening

-Channel 72 ok…

-Understood ok

The communication channels for sailing boats are channels 72 and 73.

Marina tip channels are usually these two channels.

Most radios can use two channels at the same time. It's called DW (Dual Watch). In this way, it is possible to listen to the general listening channel 16, while also keeping track of conversations between sailors from 72 or 73.

In radio conversations, clear words should be chosen and a clear expression should be used.

16. channel is a public call channel and should not be constantly occupied.

Since radios are usually located near the map table, it's not always easy to hear the call from the cockpit. For this purpose, either a wired handset extending to the entrance of the hall or also a hand held radio should be kept. However, due to the antenna height and 5W output power, no hand held radio should expect the boat to be as efficient as the calls to its own radio.

Each boat must have an emergency spare radio antenna.

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