High Quality Content by WIKIPEDIA articles! The Port of Constanța is located in Constanța, Romania, on the western coast of the Black Sea, 179 nautical miles (332 km) from the Bosphorus Strait and 85 nmi (157 km) from the Sulina Branch, through which the Danube river flows into the sea. It covers 3,926 ha (9,700 acres), of which 1,313 ha (3,240 acres) is land and the rest, 2,613 ha (6,460 acres), is water. The two breakwaters located northwards and southwards shelter the port, creating the safest conditions for port activities. The present length of the north breakwater is 8,344 m (27,375 ft) and the south breakwater is 5,560 m (18,240 ft). The Port of Constanţa is the largest on the Black Sea and the fourth largest in Europe.