Constant weight without fins (CNF) is an

AIDA International Association Internationale pour le Développement de l'Apnée (AIDA) (English: ''International Association for the Development of Apnea'') is a worldwide rule- and record-keeping body for competitive breath holding events, also known as freedivi ...

(International Association for Development of Apnea)

freediving Freediving, free-diving, free diving, breath-hold diving, or skin diving is a form of underwater diving that relies on breath-holding until resurfacing rather than the use of breathing apparatus such as scuba gear. Besides the limits of breath-h ...

discipline in which the

freediver Freediving, free-diving, free diving, breath-hold diving, or skin diving is a form of underwater diving that relies on breath-holding until resurfacing rather than the use of breathing apparatus such as scuba gear. Besides the limits of breath- ...

descends and ascends by swimming without the use of

fins A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. Fin ...

or without pulling on the rope or changing his ballast; only a single hold of the rope to stop the descent and to start the ascent is allowed. Constant weight without fins is the depth discipline of freediving that is most challenging, because of the physical effort needed to swim without assistance.

Challenges

The main differences between free diving disciplines that involve diving to depth and those that occur at the surface are: the dive cannot be interrupted, there are periods where work is performed and the diver is impacted by direct effects of pressure.

Current record holders

* Women:

Mirela Kardašević Mirela Cabero García (born July 31, 1990 in Aranjuez, Spain), simply known as Mirela, is a Spanish singer and actress. Mirela has participated in various musical contests and singing competitions since she was a child. Career 2004: ''Eu ...

(

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) – 75 metres * Men:

William Trubridge William Trubridge (born 24 May 1980) is a New Zealand world champion and world record holding freediver. Trubridge was the first diver to go deeper than without oxygen and as of 2013 held the world record in the free immersion and constant ...

(

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

) – 102 metres on July 21, 2016

References

External links

AIDAWilliam Trubridge 101m CNF World Record Freedive
{{Underwater diving, frediv * de:Apnoetauchen#Tieftauchdisziplinen mit konstantem Gewicht