John Crossley Swallow FRS (11 October 1923 – 3 December 1994) was an English oceanographer who invented the Swallow float (sometimes referred to as a neutral buoyancy float), a scientific drifting bottle based on the messages in bottles that shipwrecked sailors hoped would reach inhabited shores, summoning assistance. He was elected a Fellow of the Royal Society in 1968.
John Crossley Swallow FRS (11 October 1923 – 3 December 1994) was an English oceanographer who invented the Swallow float (sometimes referred to as a neutral buoyancy float), a scientific drifting bottle based on the messages in bottles that shipwrecked sailors hoped would reach inhabited shores, summoning assistance. He was elected a Fellow of the Royal Society in 1968.
Source: Wikipedia "John C. Swallow" · CC BY-SA 4.0
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