172Competence of worker—incidental diving work

172  Competence of worker—incidental diving work  (1) A person must not carry out incidental diving work unless the person:  (a) has the knowledge and skill referred to in regulation 171A; and  (b) has relevant diving experience; and  (c) is accompanied and supervised in the water by a person who has the competencies referred to in regulation 171.  (2) In this regulation, a person has relevant diving experience if the person has logged at least 15 hours of diving, of which at least 8 hours and 20 minutes were spent diving between 10 metres above and any depth below the maximum depth at which the diving work is to be carried out.