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Skandalopetra diving
''Skandalopetra'' diving dates from ancient Greece, when it was used by sponge fishermen and has been re-discovered in recent years as a freediving discipline. It consists of a variable ballast dive using a ''skandalopetra'' tied to a rope. A companion on a boat recovers the diver pulling the rope after the descent, always watching over from the surface.
== Origins ==
A skandalopetra dive better known to contemporary divers is perhaps that of Haggi Statti, a Greek sponge fisherman who, on 14 July 1913, in the Karpathos port recovered the lost anchor of the ''Queen Margaret'', a ship of the Italian Navy, at the depth of 83 m. The ''skandalopetra'' (or simply ''petra'', "stone") is a stone, usually of marble or granite, weighing between 8 and 14 kg, with rounded corners and hydrodynamic shape.〔(【引用サイトリンク】url=http://rrtc.at/aktivskandalopetra-en.htm )〕〔(【引用サイトリンク】url=http://www.ecoglobalsociety.com/kalymnos-skandalopetra-unique-diving-festival/ )〕
It was the only tool used by divers, since the time of Alexander the Great.〔〔
The fishermen, naked, were secured to the stone with a thin cord. The ''skandalopetra'' itself was secured to the boat with the same rope. This link allowed fishermen to dive safely for centuries.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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