Section 26-39. Requirements for communication equipment

Communication equipment must be designed to work under all conditions, ensuring stable, continuous communication between the diver and surface personnel. The person monitoring the dive must be able to clearly hear the diver breathing and speaking. Cabled communication equipment must be used in all diving operations.
Voice communication must be shielded from noise and other disturbance.
An exemption from the requirement in the first and second paragraphs is made for undertakings engaged in the training of recreational divers (instructors in recreational diving), undertakings engaged in recreational dive guiding, and for diving in a pool such as a swimming pool with a depth of up to six metres, unless the risk assessment shows that cabled communication is necessary.