Constant weight (CWT) is a

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 recognised by

AIDA ''Aida'' (or ''Aïda'', ) is an opera in four acts by Giuseppe Verdi to an Italian libretto by Antonio Ghislanzoni. Set in the Old Kingdom of Egypt, it was commissioned by Cairo's Khedivial Opera House and had its première there on 24 December ...

, the International Association for the Development of Apnea, in which the freediver descends and ascends using their

monofin A monofin is a type of swimfin typically used in underwater sports such as finswimming, free-diving and underwater orienteering. It consists of a single or linked control surface (fluid dynamics), surfaces attached to both of the diver's feet, ...

and/or with the use of their 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 one of the eight disciplines considered for international competition, the others being constant weight bi-fins (CWTB), constant weight without fins (CNF),

static apnea Static apnea (STA) is a discipline in which a person holds their breath ( apnea) underwater for as long as possible, and need not swim any distance. Static apnea is defined by the International Association for Development of Apnea (AIDA Interna ...

(STA), dynamic apnea without fins (DNF), dynamic with fins (DYN),

free immersion Free immersion (FIM) is an AIDA International freediving discipline in which the freediver dives under water without the use of propulsion equipment, but only by pulling on the rope during descent and ascent. Performances may be done ''head first' ...

(FIM), and dynamic apnea bi-fins (DYNB).

Current World Record Holders

* men:

Alexey Molchanov Alexey Molchanov (russian: Алексей Олегович Молчанов, born 6 March 1987) is a Russian champion freediver, 34-time world champion (AIDA and CMAS), world record holder, and freediving promoter. He is also president of the " ...

(

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

), 131 metres in 4 minutes 33 seconds. (2021-07-17) * women: Alenka Artnik (

Slovenia Slovenia ( ; sl, Slovenija ), officially the Republic of Slovenia (Slovene: , abbr.: ''RS''), is a country in Central Europe. It is bordered by Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the southeast, an ...

), 122 metres in 3 minutes 34 seconds. (2021-07-23)

References

{{Underwater diving *