Lead anchor-stock cores from Tektas Burnu, Turkey

Four sets of lead anchor-stock cores have been found recently on the 5th-century BCE Greek shipwreck at Tektag Burnu, Turkey. The anchor type these cores represent was the earliest departure from the use of stone in anchor construction. Scholars have dated this technological advance to c . 400 BCE, but the Tektas Burnu cores now indicate that the anchor type already existed in the third quarter of the 5th century BCE.