Underwater communication is the fundamental principle of every dive of any level and is worth more for recreational than for technical diving.
Diving in pairs or in groups means having to be able to interact with divers.
A lack or poor communication is tantamount to diving alone.
Technology today, puts us at the disposal of those who dive, even at a sporting level, a series of tools that allow you to communicate by voice with your diving companions and with “tender” of support on the surface.
Not everybody, But, they can afford these expensive equipment, Furthermore, these can present operating drawbacks.
At the moment, in recreational diving, the safest and most used system for underwater communication is the gestural one performed with the arms and hands.
There are a number of conventional coded signals, whose description and meaning are the subject of courses and specializations.
It is essential to select, from the wide range of signals, those strictly necessary, avoiding not only the superfluous, but also the signs that can create confusion and uncertainty both in meaning and in execution.
- Very important, then, it is not just the knowledge of the signal , but the mechanical acquisition of the same.
- While diving we don't have to force ourselves to remember the meaning of a signal or how it is to be performed: everything should be automated and part of our communication code.
- The signs must be clear and unmistakable.
A lot of attention must be paid to the execution of the single signal with exercises on the ground and first agreeing with the companions.
When diving, it is a good idea to stand at a distance such as to be safely and completely seen.
The gestures must be emphasized to the maximum by executing the signal with appropriate slowness and amplitude of the movements.
- It is good practice, before transmitting a gesture message, make sure your partner pays due attention.
If we have to convey a message, composed of one or more signals, it is advisable to repeat the message several times, starting from the beginning and retransmitting it in full.
- Always wait for confirmation that the message has been received.
Due to particular environmental conditions and / or deep altitudes, you have to be sure that the message has not only arrived, but that it has been received in the right way.
E’ important to recommend, that the recipient partner repeats the message in its entirety, repeating all the signals received, and follow the OK sign.