C.M.A.S. – Confederation Mondiale des Activites Subaquatiques
This was the first diving federation and was originally started by Jacques Cousteau. Unlike most federations it is represented by different associations in different countries which means that the courses vary as well.
In Malta there is the FUAM (Federation of Underwater Activities Malta).
In France the FFESSM ( ……)
In Germany there are various associations including VDST and Barracuda
In the UK there is BSAC (British Subaqua Association) and the Scottish Subaqua Association.
In Belgium and Holland there is CEDIP
The levels are 1* which is comparable to PADI Open Water up to 3* which is comparable to PADI divemaster and then on to Instructor grades.