MS Zenobia was a Swedish-built Challenger-class RO-RO ferry launched in 1979 that capsized and sank in the Mediterranean Sea, close to Larnaca, Cyprus, in June 1980.

[1][4] She now rests on her port side in approximately 42 meters (138 ft) of water and was named by The Times, and many others, as one of the top ten wreck diving sites in the world.

[1] She left Malmö, Sweden, bound for Tartous, Syria on 4 May 1980, loaded with 104 tractor-trailers with cargo destined for the Mediterranean and the Middle East.

[2] She arrived at Larnaca on 2 June 1980,[1] where the ballast problem had reoccurred, engineers discovered that the computerized pumping system was pumping excess water into the side ballast tanks due to a software error, making the list progressively worse.

[2] On 4 June, Zenobia was towed out of Larnaca harbor to prevent her becoming an obstruction should the worst happen[2] and was left at anchor roughly 1–1.5 miles (1.6–2.4 km) offshore.