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One Star Diver
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CMAS One Star Diver Training Programme


This training programme introduces the fundamentals of scuba diving to the newcomers to the fantastic world of scuba diving. Upon course completion, the diver is to possess sufficient knowledge, skill and experience to procure air, equipment, and other diving services, to plan, conduct, and log open-water dives that do not require mandatory decompression stops, without the supervision of a CMAS Instructor or CMAS Dive Leader, when properly equipped and accompanied by another certified diver of at least the same level, assuming that diving conditions and the diving area are similar, equal or better to those in which training was received, has direct vertical access to the surface and diving activities are performed during daylight. Maximum depth is limited to 20 meters.


The training will be conducted by CMAS Instructor with a minimum of a CMAS One Star Instructor. He/she may be assisted by a CMAS Dive Leader.


Course prerequisites:

Course content:


Swimming exercises

  • 200 meters surface swim (fully equipped)
  • Min 20 seconds breath hold
  • Min 15 meters dive while holding breath

Scuba exercises

Dive #1:

  • Scuba assemble
  • Buddy check
  • Proper entry*
  • 100 m swim demonstrating proper finning techniques
  • Hovering 3 min @ 3 meter

Dive #2:

  • Scuba assemble
  • Buddy check
  • Proper entry*
  • Regulator/gauge recovery techniques demonstration
  • Remove/clear mask
  • Emergency ascent

Dive #3:

  • Scuba assemble
  • Buddy check
  • Proper entry*
  • Controlled descent to the bottom
  • Extended hand signals demonstration
  • Buddy breathing/air sharing demonstration
  • Controlled ascent to the surface

Dive #4:

  • Scuba assemble
  • Buddy check
  • Proper entry*
  • Demonstration of basic rescue techniques

* Giant step, backjump, in-water dressing, shallow water walk-in

Theory lessons

  • CMAS: aims, foundation, hierarchy, course goals
  • Environment (underwater world)
  • Equipment: proper use, the principles of operation, care
  • Diving physics (pressure, volume, sound, light, buoyancy etc)
  • Diving related illnesses (barotraumas, DCS, hypothermia etc)
  • Diving accidents and dangerous situations.
  • First aid and response
  • Dive planning (place, equipment, buddy, dive plan, emergency procedures plan)

Upon completion of the course, the participant is to take a written exam or online test.



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