Kronprins Frederik

MV Patra, formerly known as Kronprins Frederik, was a Danish-built passenger ferry constructed in 1941 at Helsingør Shipyard, Denmark. It primarily operated on North Sea routes under the ownership of Det Forenede Dampskibs-Selskab (DFDS). In March 1976, the ship was sold to the Arab Navigation Company of Suez and was renamed to Patra. On 24 December 1976, the ferry sank after catching fire while en route from Jeddah to Suez in the Red Sea.