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Learn scuba diving - Free online learning:

Discover scuba diving with the beginner course named "10m Diver" and then, you may learn more with the other courses.

Once you know the theoretical part, any diving instructor in the world can teach you the wetted part.
The IFDI courses conform to the ISO standards requirements. So, your IFDI diploma is recognizable all around the world.

Summary of the water skills:

A 10m Diver

can comfortably do:

° Basic buoyancy control.

° Full emptying of the mask.

° The regulator recovery & emptying.

° Breathing on an alternate air source.

+ Has the required knowledge for diving at 10m.

& Has a minimum of 2 logged training dives in open water with an instructor.

A supervised diver.
(ISO 24801-1)

A 20m Diver

can comfortably do:

Like a 10m diver.

+ Perfect buoyancy control.

+ Remove the mask, swim, put it back & emptying.

+ Remove and put back the scuba tank & weight belt.

+ Has the required knowledge for diving at 20m.

& Has a minimum of 4 logged training dives in open water with an instructor.

Autonomous diver.
(ISO 24801-2)
(Max: 20m)

A 30m Diver

can comfortably do:

Like a 20m diver.

+ Can help another diver.

+ Has good skills in underwater orientation.

+ Has experience in various diving conditions.

+ Has the required knowledge for diving at 30m.

& Has a minimum of 10 logged training dives in open water with an instructor.

Autonomous diver.
(ISO 24801-2)
(Max: 30m)

A 40m Diver

can comfortably do:

Like a 30m diver.

+ Can rescue another diver.

+ Has a perfect mastering of the body & a calm breathing.

+ Is aware of the other divers & his/her own limit.

+ Has the required knowledge for diving at 40m.

& Has a minimum of 20 logged training dives in open water with an instructor.

Autonomous diver.
(ISO 24801-2)
(Max: 40m)

A Nitrox Diver is a 20m diver (or more) who has the required knowledge for diving with enriched air. (ISO 11107)

Important note: The above informations summarize the essential requirements for IFDI courses. For more details, you may also click on the following links: ISO 24801-1, ISO 24801-2, ISO 11107. As explained in the IFDI courses, there's a real difference between diving at 20 meters or at 40 meters depth. Therefore, IFDI considers safer to subdivide the ISO level (autonomous diver) into 3 categories: 20, 30 and 40 meters. The above mentioned depths are approximate values and should not be considered as strict values.

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