In addition to the equipment listed in article A. 322-78, the organisation of a dive using trimix or heliox mix requires the presence of the following equipment at the launch or immersion site:
-a weighted descent and ascent line which may also be used for decompression;
-a copy of the planned dive schedule(s);
-logistical support or a practice support boat with an authorised person on the surface to manoeuvre it.