From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

CMAS * SCUBA Diver, CMAS one-star Scuba diver, or just CMAS * is an entry level diving certification for recreational SCUBA issued by Confédération Mondiale des Activités Subaquatiques (CMAS), enabling divers to undertake accompanied no-decompression dives to a maximum depth of twenty meters.[1] CMAS describes that a One Star Diver shall be deemed "to have sufficient knowledge, skill and experience to procure air, equipment, and other diving services and to plan, conduct, and log open-water dives that do not require mandatory in-water 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, provided the diving activities undertaken, the diving conditions and the diving area are similar, equal or better to those in which training was received".

The CMAS certification system

CMAS * training is available from two sources. Firstly, from national diving federations affiliated to the CMAS Technical Committee (known as CMAS Federations) using their member diving clubs, their member instructors where the federation is exclusively an instructor organisation or by agreement with independent underwater diving training organizations.[2][3][4] Secondly, from specially accredited dive centers known as CMAS Dive Centers (CDC) who use dedicated CMAS training materials and who directly issue CMAS diving certificates.[5]

Course details[edit]

The course covers the following theory topics:[6]

and the following practical skills:

  • snorkelling;
  • assembly and fitting of scuba equipment;
  • entry and exit;
  • surface swimming with full scuba equipment (student shall be able to swim a distance of at least 50m);
  • proper weighting, buoyancy;
  • clearing and replacing mask and mouthpiece;
  • out-of-air emergency procedures, using a secondary air supply;
  • controlled buoyant lift;
  • diver assistance techniques, towing and landing a casualty;
  • employing expired air ventilation and cardio-pulmonary resuscitation.
  • underwater removal and replacement of scuba and ballast systems
  • simple under-water navigation

Following the training, five successful open water dives are required to complete the certification.[6]

The course has the following minimum requirements:

  • Theory lessons totalling 385 minutes;
  • Practical lessons totalling 480 minutes;
  • Five open water dives.[6]

Recommended curricula[edit]

Although the CMAS* Diver standard is a minimum requirement, individual CMAS Federations may recommend or require higher standards or extra coverage for their entry-level certification to suit local conditions and requirements. For example, the Sub-Aqua Association in the UK places extra emphasis on the theory and prevention of decompression sickness, diving from small boats and cold-water diving.[7]

See also[edit]


  1. ^ "CMAS One Star Diver Training Standard (version 2011/4)" (pdf). Confédération Mondiale des Activités Subaquatiques. 6 April 2011. pp. 3–6. Retrieved 10 March 2016.
  2. ^ "Federations affiliated to the CMAS Technical Committee". Confédération Mondiale des Activités Subaquatiques. Retrieved 27 October 2012.
  3. ^ "Welcome to CMAS Instructors South Africa". CMAS Instructors South Africa. Retrieved 28 October 2012.
  4. ^ "ORGANIZATIONAL STANDARDS". Scuba Educators International. Retrieved 28 October 2012.
  5. ^ "CMAS Diving Centers". Confédération Mondiale des Activités Subaquatiques. Retrieved 27 October 2012.
  6. ^ a b c "CMAS One Star Diver Training Programme (version 2011/4)" (pdf). Confédération Mondiale des Activités Subaquatiques. 6 April 2011. pp. 3–6. Retrieved 10 March 2016.
  7. ^ Cole, Bob (2009). "Chapter 7". Student Diver Tool Box (second ed.). Sub-Aqua Association. ISBN 0-9532904-9-2.

External links[edit]