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Surface finswimming (also known by its acronym, SF) is swimming on the surface of the water using mask, snorkel, and monofins.SF races are held for distances of 50, 100, 200, 400, 800, 1500, 4 × 50 mix relays (2 men's, 2 women's), 4 × 100 relays and 4 × 200 relays (meters) in swimming pools and over various long distances in the open water environment.
The GUPPY II conversion (SCB 47), implemented from 1947 to 1951, was generally similar to the GUPPY I, except for retention of both periscopes and introduction of the recently perfected snorkel. The addition of three new masts—snorkel induction, snorkel exhaust, and ESM mast—required more room in the upper portion of the sail.
A snorkel is used to allow the user to breathe atmospheric air when their face is immersed in water while swimming or floating at the surface. [1] To work effectively, the snorkel must allow the user to inhale and exhale comfortably over an extended period, and provide a sufficient volume of air with appropriate oxygen and carbon dioxide content to maintain a sufficient and comfortable ...
TYR Pro Swim Series Indianapolis, United States [64] [65] 50m backstroke: 26.86 Kaylee McKeown Australia 20 October 2023: World Cup: Budapest, Hungary [66] 100m backstroke: 57.13 Regan Smith United States 18 June 2024: U.S. Olympic Trials: Indianapolis, United States [67] [68] 200m backstroke: 2:03.14 Kaylee McKeown Australia 10 March 2023: NSW ...
Monofin made in 1969 by Franco Pavone in Bologna. 1949: Kurt Schaefer, [3] who invented an underwater film camera during wartime military service in Italy, designs a pair of homemade swimming fins, which he proceeds to fasten together with straps and cords to create what is probably the world's first monofin.
(Reuters) -AT&T's fourth-quarter wireless subscriber growth surpassed expectations on Monday, fueled by strong demand for its discounted premium plans combining 5G mobile with high-speed fiber ...
Snorkel breathing is inherently negative pressure breathing, as the lungs of the swimmer are at least partly below the surface of the water. [ 16 ] There appears to be a connection between negative pressure breathing and a higher risk of pulmonary oedema while diving, as it increases the pressure difference between alveolar blood and gas. [ 95 ]
In sailing, the limit of positive stability (LPS) or angle of vanishing stability (AVS) is the angle from the vertical at which a boat will no longer stay upright but will capsize, becoming inverted, or turtled.