Constant Weight Without Fins (CNF)
The freediver descends and ascends under water using only his own muscle strenght, without the use of propulsion equipment and without pulling on the rope. Constant weight without fins is the most difficult sportive depth discipline, because of absolutely no propulsing material to go down in the water. This category needs a perfect coordination between propulsing movments, equalization, technique and buoyancy.


Constant Weight (CWT)
The freediver descends and ascends using his fins/monofin and/or with the use of his arms without pulling on the rope or changing his ballast; only a single hold of the rope to stop the descent and start the ascent is allowed. Constant weight is the common sportive depth discipline of freediving, because of the specific fins or monofins used in it. Constant weight is one of the three disciplines considered for the international competitions by team, with Static apnea and Dynamic with fins.


Dynamic Without Fins (DNF)
The freediver travels in a horizontal position under water attempting to cover the greatest possible distance. Any propulsion aids are prohibited. Dynamic without fins is the most natural of both disciplines measuring the distance for many freedivers, because it doesn't need any propulsing material, but a very good technique. Performances also could only be recognized in pools with a minimum lenght of 25 meters, and are greatly appreciated from "old-swimmers".


Dynamic With Fins (DYN)
The freediver travels in a horizontal position under water attempting to cover the greatest possible distance. Any propulsion aids other than fins or a monofin and swimming movements with the arms are prohibited Dynamic with fins is the most typical of both disciplines measuring the distance in freediving, because of the specific means of propulsion : long fins or monofin. Performances could only be recognized in swimming-pools with a minimum length of 25 meters, and are sometimes considered in national or indoor's 'combiné', with the Static apnea.


Static Apnea (STA)
The freediver holds his breath for as long as possible with his respiratory tracts immerged, his body either in the water or at the surface. Static apnea is the only discipline measuring the duration, and one of the three disciplines considered for the international competitions by team, with Constant weight and Dynamic with fins. Performances could be done and recognized in both pool or open water (sea, lake, river, etc).  


Free Immersion (FIM)
The freediver dives under water without the use of propulsion equipment, but only by pulling on the rope during descent and ascent. Free immersion is the sportive depth discipline with the purest sensations, because of the speed of the water in the body, and the power of each pull on the rope as only mean of propulsion. Performances could be done the head first during the descent, or the feet first, depending equalization facilities of each freedivers… Some of them also even use mixed solutions.


Variable Weight (VWT)
The freediver descends with the help of a ballast weight and ascends using his own strength: arms and/or legs, either by pulling or not pulling on the rope. Variable weight is the first of both depth disciplines using a sled to go down in the water. Old sleds was descending "head first", like presented in the famous Luc Besson's movie "Le Grand Bleu", but new sleds descending "feet first" are now generalized.


No Limit (NLT)
The freediver descends with the help of a ballast weight and ascends via a method of his choice. No limit is the absolute depth discipline. Going down with a sled, and going back up with a balloon, a diving suit or a vest with inflatable compartments, or whatever other means.

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Thanks...good for knowledge!!

Whoa....... :o Thanks for the info.

meph bro... thanks for sharing.
very good one. 

wats the depht usualy?
 

For all AIDA disciplines, the depth the athlete will attempt is announced before the dive. This is accepted practice for both competitions and record attempts.

Constant Weight with fins. The athlete has to dive to the depth following a guide line that he or she is not allowed to actively use during the dive. The ‘constant weight’ ("poids constant") refers to the fact that the athlete is not allowed to drop the weights during the dive. Both bi-fins and mono-fin can be used during this discipline (AIDA).
Constant Weight without fins follows the identical rules as Constant Weight with fins, except no swimming aids such as fins are allowed. This discipline is the youngest discipline within competitive freediving and is recognised by AIDA International since 2003.(AIDA)
Free Immersion is the discipline in which the athlete uses the guideline to pull him or herself down to depth and back to the surface. It is known for its ease compared with the Constant Weight disciplines, while the athlete is still not allowed to release weights (AIDA).
Variable Weight is a record discipline that uses a weighted sled for descent. Athletes return to the surface by pulling themselves up along a line or swimming while using their fins (AIDA).
No Limits is a record discipline that allows the athlete to use any means of breath-hold diving to depth and return to the surface as long as a guideline is used to measure the distance. Most divers use a weighted sled to dive down and use an air-filled bag to return to the surface (AIDA).
"The Cube" is also known as "Jump Blue" and is a discipline in which an athlete has to descend to 15 meters and swim as far as possible in a cubic form of 15 x 15 meters. (CMAS only)
Each organization has its own rules on recognizing an attempt. These can be found on the website from the respective organizations.

Hope this could help. Cheers! 

waa... ery, not bad huh..
anyway, good info! thanx..
 

my pleasure   

please refer to http://malaysianunderwater.com/smff/index.php/topic,772.0.html

walllaoooyeahh!! its a big gap there..
pheww..
 

thanks for the info bro. you're the mann! 

and thats my man, my seafooo..