Extract Analasys (50 Pounds by A.Coppard)

Finswimming
Finswimming is an underwater sport consisting of four techniques involving swimming with the use of fins either on the water's surface using a snorkel with either monofins(a swimfin which consists of a single or linked surfaces attached to both of the diver's feet) or bifins ( one fin for each foot) or underwater with monofin either by holding one's breath or using open circuit scuba diving equipment.
Was Invented for use by the Russian Special Forces, a mono-fin was first strapped onto the feet of swimmers in order to allow them to move more quickly in the water while keeping their hands free. The easiest and most natural stroke to use while wearing a fin is the Dolphin Kick. The Dolphin Kick requires snaking the body in exactly the same way as the mammal from which the name was taken.
This type of swimming has his own techniques.
The first is surface swimming. SF is swimming on the surface of water using mask, snorkel and monofins. SF races are held for distances of 50, 100, 200, 400, 800, 1500, 4 × 100, 4 × 200 meters   in swimming pools. Swimmers must remain on the surface of the water at all times for the duration of the race except when starting or make a turns at the end of a swimming pool where an immersion over a distance of 15m is permitted.
The second is apnoea finswimming. AP is underwater swimming in the swimming pool using mask, monofin and holding one's breath. AP races are held for the distance of 50m. A swimmer's face must be immersed for the duration of the race or risk disqualification.
The third is immersion swimming with breathing apparatus. IM is underwater swimming using mask, monofin and underwater breathing apparatus conducted in a swimming pool. While there are no requirements on how a breathing apparatus is carried, it cannot be exchanged or abandoned during a race. IM races are held for distances of 100 and 400 m. A swimmer's face must be immersed for the duration of the race or risk disqualification. IM races are not...