M7 – Communication in Diving

Although the sound propagates better in the water than in the air, it is impossible for the diver to verbally communicate underwater with his diving companion, except through more or less complicated and expensive communication equipment.

The simplest way to achieve this communication is through sign signalling. Basically, all signals should be intuitive, easy to execute, easy to understand and easy to answer.

ANY ADDITIONAL SIGN TO THE SET OF BASIC SIGNS MUST ALWAYS BE CLEARLY EXPLAINED TO ALL MEMBERS OF THE GROUP, BEFORE DIVING

There are Day Signals and Night Signals for communication in diving. These signs are divided into four groups:

• Signs among divers on the surface.
• Signs among submerged divers.
• Signs between diver to the surface and boat.
• Signs between submerged diver and boat.

AT THE END OF THE MODULE THE STUDENT MUST KNOW

1. The types of signs in the dive.
2. The meaning of each of the diving signals.
3. Correctly execute the dive signals.
4. Respond correctly to the signal that is made to you.