Four Star Nitrox Diver

(ISO 14153-3, CMAS 4 Star Diver, RSTC Recreational Dive Supervisor)

(ISO 11107)

1 Definition

A three star diver who has attained a higher than average level of knowledge and ability supported by

broad experience. He will be competent to use divers and diving to achieve major tasks or project


2 Entry requirements

2.1 Must have held a 3 Star Diver Certificate for at least 2 years.

2.2 Must have been a member of PTRD for at least 5 years.

2.3 Must have carried out at least 100 dives, under varying conditions, since obtaining 3 Star Diver


3 Course content

It is not considered that this level will be reached following a course of fixed content, but rather as the

result of experience acquired over an extended period and incorporating a broad range of conditions and


4 Assessment

The diver must be able to prove his capabilities in organizing diving expeditions and other diving activities

with a particular stress on safety and emergency procedures, and by proving his competence in a given

specialized area or in a scientific discipline.

The assessment will be made at a national level by a panel composed of 3 Star Instructors and confirmed

by the responsible National Technical Committee.

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