Human necessity and desire of staying underwater always has been a constant feature through history. Recently, science and technical progress have made scuba diving much easier and popular.

Scuba diving as a kind of recreational and sport activity has appeared during last 20 years.

The spirit of Sport Diving, though its regulation, aims to achieve the following objectives:

• Developing a specific and unique competitive sport among underwater activities, considering theevolution and technicity of our sport,
  
• Boosting underwater activities in inland areas where access to the sea is difficult or where the weatherconditions are poor, all year round, through the practice of a scuba sport in swimming pools,
  
• Generating an optimum and better training for divers, by practicing their diving abilities and skills,
  
• To promote the practice of sports activities through scuba diving in swimming pools, while serving as a meeting place and entertainment for club members and friends, and lovers of underwater activities.
  

It consists of a first underwater movement until the 15m or 35m underwater line of the pool, the emergence of an object of 6-kilogram weight with the aid of a SMB (lift bag) equipped with a carabiner directly attached to the lower strap of the SMB, and ends by an underwater movement up to the finish wall, as quickly as possible.It is a solo event, man or woman, based on an underwater movement over 25m or 50m, depending on the pool size (*).

(*) The 50M event version is available in 50m-pool. The 25M and 50M event versions are available in 25m-pool.

The trial is a race on 100m or 200m (**) in which different skills are practiced : fast swimming on the surface, underwater apnoea swimming, underwater scuba diving, fast swimming and stripping and recapping diving equipment.

The competitor starts an underwater part until the 15m-limit, and then starts apnoea after leaving equipment in a 20m-distance drop-zone, situated after the 15m-limit of the pool and before the 35m-limit of the pool; the competitor emerges after the 35 metres' limit without equipment, and continues surface swimming until having reached the total length of surface distance.

The Competitor immerses with apnoea, takes back equipment on within the 15m- and 35m-limit, and ends underwater until having covered the decided total length.
It is a solo event, man or woman, based on an underwater movement over 100m, or 200m, depending on the pool size(**). 

(**) The 100M and 200M event versions are available in 50m-pool. The 100M event version is available in 25m-pool.

For the relay version (2 men + 2 women) of TRIAL, the event will be based on an underwater movement of 4x100m. 

This race is a course performing various skills and tasks reflects CMAS 1* level, in a shorter version compared to the PAIR event. It includes different steps.
From the 1st Split to the 2nd Split, the competitors will swim underwater :

• through a 2m tunnel with air tank on their back,
  
• putting off their mask in a box and recover it back, after having made a U-Turn,
  
• through a same 2m tunnel, after removing air tank from their back,
  
• putting their air tank back on their back,
  
• and then ending the heat in an underwater immersion swimming part.

It is a solo event, man or woman, based on an underwater movement over 50m or 100m, depending on the pool size (***)

(***) The 100M event version is available in 50m-pool. The 50M event version is available in 25m-pool.

This event is a race performing various skills and tasks, reflecting CMAS 1* level, including different steps.

From 0 to 50, and 50 to 100 metres the competitors will swim underwater :

• through a 2m tunnel with air tank on their back,
  
• sharing air with the octopus regulator over a distance of at least 20m (at least before the 15m-limit and up to the 35m-limit)
  
• removing their mask putting it in a box and recovering it back, after having made a U-Turn,
  
• through a 5m tunnel, after removing air tank from their back,
  
• putting their air tank back on their back,
  
• taking the dummy boy from the bottom of the pool to the surface,
  
• and then ending the heat after going back to surface holding the dummy’s face out of the water, forming with it a trinomial, from the middle of the pool to the end of the distance (at least on a 25m-distance), in a rescue style surface part.
  

It is a pair event, men, women, or mixed, based on an underwater movement over 100m.

The competitor must swim 100 metres individually, pulling an inflated buoy that remains at the surface. The total length of this event is 100m.

This is the solo race version of the TORPEDO event.

It is a solo event, man or woman, based on an underwater movement over 100m.

For the relay version (2 men + 2 women) of TORPEDO, the event will be based on an underwater movement of 4x50m.

Before the start, the two competitors are side by side ; one of them can be on the starting block.

One of the competitors uses the full compulsory diving equipment (the giver), while the other uses only a mask and fins (the receiver).

It is a pair event, men, women or mixed, based on an underwater movement over 50m or 100m length, depending on the pool size.(****)

(****) The 100M event version is available in 50m-pool. The 50M and 100M event versions are available in 25m-pool.