Section 26-32. Communication, communication systems and lifeline

Diving operations must have voice communication between the diver and the diving supervisor in a language they both master.
In addition to voice communication, a lifeline must be used. Line signals must have been agreed upon. Training must be given, and exercises organised in the use of line signals.
In cases where voice communication fails, the dive must be interrupted unless it needs to continue in order to save lives.
When a helicopter with two rescue divers is used, cf. Section 26-27, seventh paragraph, voice communication must be used between the diver and the line attendant.
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 voice communication and/or a lifeline will be necessary.