Greece's Culture Ministry says three shipwrecks from ancient and mediaeval times and large sections of their cargoes have been discovered off the small Aegean island of Kasos.
A statement this week said an underwater survey that ended last month also located cannons and other scattered finds – possibly from other foundered vessels that have not yet been pinpointed.
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The oldest of the wrecks found was a 2,300-year-old trader. Its surviving cargo included amphorae – large jars used to transport wine, oil or foodstuffs – and fine tableware. Archaeologists also located five stone anchors in the wreck.
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The two other ships dated to the 1st century BCE and the 8th-10th century CE.
Kasos lies between Crete and Rhodes on what remains a key trade route linking the Aegean with the Middle East.