Constant weight without fins explained
Constant weight without fins (CNF) is an AIDA International (International Association for Development of Apnea) freediving discipline in which the freediver descends and ascends by swimming without the use of fins or without pulling on the rope or changing his or her ballast; only a single hold of the rope to stop the descent and to start the ascent is allowed.[1] 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.[2]
Current record holders
External links
Notes and References
- McKie, N . Freediving in cyberspace. . Journal of the South Pacific Underwater Medicine Society. . 2004 . 34 . 101–3 . 2013-10-05 . https://archive.today/20131005155859/http://archive.rubicon-foundation.org/8947 . 2013-10-05 . usurped .
- Schagatay E . Predicting performance in competitive apnea diving. Part III: deep diving . Diving and Hyperbaric Medicine . 41 . 4 . 216–28 . December 2011 . 22183699 . https://archive.today/20140210211128/http://archive.rubicon-foundation.org/10371 . usurped . February 10, 2014 . 2014-02-10.
- Web site: Vertical Blue 2023 Day 6: Kateryna Sadurska, Alenka Artnik Set New World Records . deeperblue.com . 2023-07-27 . 2023-10-03.
- Web site: Kiwi freediver William Trubridge sets world record. Stuff. en. 2018-08-26.
