Constant weight without fins
{{Short description|Freediving discipline}}
File:Freedivingbreaststroke.jpg breaststroke technique used for CNF dives]]
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.{{cite journal |last=McKie |first=N |year=2004 |title=Freediving in cyberspace. |url=http://archive.rubicon-foundation.org/8947 |url-status=usurped |journal=Journal of the South Pacific Underwater Medicine Society. |volume=34 |pages=101–3 |archive-url=https://archive.today/20131005155859/http://archive.rubicon-foundation.org/8947 |archive-date=2013-10-05 |access-date=2013-10-05}} 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.{{cite journal |last=Schagatay |first=E |date=December 2011 |title=Predicting performance in competitive apnea diving. Part III: deep diving |url=http://archive.rubicon-foundation.org/10371 |url-status=usurped |journal=Diving and Hyperbaric Medicine |volume=41 |issue=4 |pages=216–28 |pmid=22183699 |archive-url=https://archive.today/20140210211128/http://archive.rubicon-foundation.org/10371 |archive-date=February 10, 2014 |access-date=2014-02-10}}
Current record holders
- Women: Kateryna Sadurska (Ukraine) – 80 metres on October 7, 2024 {{Cite web |last=Barkhush |first=Amira |date=2024-10-11 |title=Ukrainian Freediver Sadurska Breaks Her Own World Record With 80-Meter Dive Without Fins |url=https://united24media.com/latest-news/ukrainian-freediver-sadurska-breaks-her-own-world-record-with-80-meter-dive-without-fins-2939 |access-date=2024-10-20 |website=UNITED24 Media |language=en}}
- Men: William Trubridge (New Zealand) – 102 metres on July 21, 2016{{Cite web |date=2016-07-21 |title=Kiwi freediver William Trubridge sets world record |url=https://www.stuff.co.nz/sport/other-sports/82322483/kiwi-freediver-william-trubridge-sets-world-record |access-date=2018-08-26 |website=Stuff |language=en}}
References
{{Reflist}}
External links
- [https://www.aidainternational.org AIDA]
- [https://www.youtube.com/watch?v=PUcpzf0rbAw William Trubridge 101m CNF World Record Freedive]
{{Underwater diving|frediv}}