CMAS* scuba diver

The training programme enables divers to undertake accompanied no-decompression dives to a maximum depth of 20 meters in open water.

"[3] CMAS one-star scuba divers can undertake accompanied no-decompression dives to a maximum depth of 20 meters in open water.

The Confédération mondiale des activités subaquatiques (world underwater federation) was created in 1959 to bring consistency between different national diving certification systems.

As a result, the CMAS one-star diver certification is usually delivered as an equivalence to a national one-star diver certification delivered through a federation affiliated to the CMAS Technical Committee.

[9] The course covers the following theory topics:[10] and the following practical skills: Following the training, five successful open water dives are required to complete the certification.