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A "Composed Anchor" is made out of a large chiseled stone and has at least three holes in it. A rope was tied in the upper hole—to lower and hoist the anchor—and wooden stakes were inserted into the two lower holes in order to grip the sea bottom. These anchors weighed between 45 and 170 pounds and could be lowered and hoisted by one or two seamen.
This type of anchor was used from the late second millennium BC on.