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History of the anchor : ウィキペディア英語版 | History of the anchor
The History of the anchor dates back millennia. The most ancient anchors were probably rocks and many rock anchors have been found dating from at least the Bronze Age.〔Johnstone, Paul and McGrail, Seán (1989). ''The sea-craft of prehistory.'' London: Routledge. ISBN 978-0-415-02635-2, p.82.〕 Many modern moorings still rely on a large rock as the primary element of their design. However, using pure mass to resist the forces of a storm only works well as a permanent mooring; trying to move a large enough rock to another bay is nearly impossible. The ancient Greeks used baskets of stones, large sacks filled with sand, and wooden logs filled with lead, which, according to Apollonius Rhodius and Stephen of Byzantium, were formed of stone; and Athenaeus states that they were sometimes made of wood. Such anchors held the vessel merely by their weight and by their friction along the bottom. Iron was afterwards introduced for the construction of anchors, and an improvement was made by forming them with teeth, or "flukes", to fasten themselves into the bottom. ==Teeth== The words and ''dentes'' (both meaning "teeth") are frequently used to denote anchors in Greek and Latin poems. The invention of the teeth is ascribed by Pliny to the Tuscans; but Pausanias gives the credit to Midas, king of Phrygia. Originally there was only one fluke or tooth, whence anchors were called ; but a second was added, according to Pliny, by Eupalamus, or, according to Strabo, by Anacharsis, the Scythian philosopher. The anchors with two teeth were called or , and from ancient monuments appear to have resembled generally those used in modern days except that the stock is absent from them all. Every ship had several anchors; the largest, corresponding to our sheet anchor, was used only in extreme danger, and was hence peculiarly termed or ''sacra'', whence the proverb ''sacram anchram solvere'', as flying to the last refuge.
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