Professionals who belong to rescue and firefighting services, Civil Protection, special groups and, in general, any person involved or interested in operations in contaminated waters. Requirement: provide diving experience by means of a diving log and/or company certificate and, more specifically, experience in the use of dry diving suits. In order to take full advantage of the course, it is advisable for trainees to have prior knowledge in the use of surface air supply systems. At least one week prior to the course, trainees shall have provided proof that they have passed a medical examination for underwater or hyperbaric activities.