During the three-year project, researchers used specialist remote deep-water camera systems previously used in offshore oil and gas exploration to map the sea floor.
"A small piece of the vessel has been carbon dated and it is confirmed as the oldest intact shipwreck known to mankind," the project said in a statement.
The ship was dated back to 400 BC - a time when the Black Sea was a trading hub filled with Greek colonies.
The vessel is one of more than 60 shipwrecks identified by the Black Sea Maritime Archaeology Project including Roman ships and a 17th-century Cossack raiding fleet.
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