Ancient Black Sea shipwrecks

Ancient Black Sea shipwrecks is the study of shipwrecks found in the Black Sea which date to Antiquity. In 1976, Willard Bascom suggested that the deep, anoxic waters of the Black Sea might have preserved ships from antiquity because typical wood-devouring organisms could not survive there. At a depth of 150m, the Black Sea contains insufficient oxygen to support most familiar biological life forms.

Originally a land-locked fresh water lake, the Black Sea was flooded with salt water from the Mediterranean Sea during the Holocene. The influx of salt water essentially smothered the fresh water below it because a lack of internal motion and mixing meant that no fresh oxygen reached the deep waters, creating a meromictic body of water. The anoxic environment, which is hostile to many biological organisms that destroy wood in the oxygenated waters, provides an excellent testing site for deep water archaeological survey.

In a series of expeditions, a team of marine archaeologists led by Robert Ballard identified what appeared to be ancient shorelines, freshwater snail shells, and drowned river valleys in roughly 300 feet (100 m) of water off the Black Sea coast of modern Turkey. Radiocarbon dating of freshwater mollusk remains indicated an age of about 7,000 years.

The team discovered three ancient wrecks to the west of the town of Sinop at depths of 100 m. Wreck A and Wreck C probably date to the late Roman period (2nd-4th century AD), while Wreck B probably dates to the Byzantine period (5th to 7th century AD).

To the east of Sinop, the team discovered a remarkably well-preserved wreck at a 320m depth, in Black Sea's deep anoxic waters. The vessel's entire hull and cargo are intact, buried in sediments. Its deck structures are also intact, including a mast rising some 11 m into the water column. Radiocarbon dating of wood from the wreck provides a date of 410-520 AD This ship has been named "Sinop D" by the Ballard team.

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