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Class IV Commercial Air Scuba Diver 30M Course

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The 30 metre Scuba qualification is the starting point of the commercial diver’s training. This scuba qualification is used by the Police Force; Fire Department; various rescue teams; Marine Archaeologists; certain Aqua Culture divers; Media Divers; and Scientific Divers. Scuba is the start of basic training for the Professional Diver using surface supply.

This qualification limits the diver to Scuba diving using small hand tools and conducting simple inspections where no decompression is required with direct access to the water surface. The diver may not operate large surface controlled power tools, or dive where the use of cranes, air lifts, diver dredging or winches are required.


Course Details for Class IV

Location: Durban South Africa. Training will be done in both fresh water and open sea conditions.

Duration: 4 weeks

Cost: Please contact us as it varies with special offers at times.


Prerequisites for Class IV:

  • Minimum age of 18 years
  • Complete and pass Diving Medical Examination as per SA Diving Regulations and be in a healthy,fit state. (Done at School Doctor)
  • Be a competent swimmer (pass a swim test 300 metres freestyle in under 10 minutes)
  • Be able to add, subtract, multiply and divide, calculate percentages, solve simple formulas such as gas laws
  • Understand written and verbal communications in English and communicate comfortably with other people
  • Have a practical aptitude (know which way to tighten and loosen bolts/nuts)


Some Subjects Covered on the 30 Metre Scuba Course:

  • The history of diving as a background overview
  • The physics of diving
  • Diving physiology and first aid
  • Air decompression tables and procedures
  • Diving equipment & maintenance for Class IV scuba and personal diving equipment care & maintenance
  • Pre- and Post-dive checks
  • Diving emergencies and rescues and diving hazards
  • Hand signals, lifeline and voice communications
  • Underwater Scuba tasks and work
  • Scuba diving diver, standby diver and attendant procedures
  • Legislation and guidance
  • Compression chambers
  • High pressure (HP) Compressors and Storage banks for filling scuba by decanting
  • Basic seamanship and inflatable boats
  • Day and night diving
  • Fresh water and open sea diving
  • Dry suits and full face masks
  • Nitrox theory & diving for Nitrox included in Combo class II Module or separate on scuba module if selected


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