The Port of Haydarpaşa, also known as the Port of Haidar Pasha (Turkish: Haydarpaşa Limanı) is a general cargo seaport, ro-ro and container terminal, situated in Haydarpaşa, Istanbul at the southern entrance to the Bosphorus. The port is operated by the Turkish State Railways (TCDD) and serves a hinterland which includes the country's most industrialized areas. It is the biggest container port in the Marmara Region and with an annual cargo volume exceeding six million metric tons (MT), is Turkey's third biggest port after Mersin, Ambarli and Izmir.
The Port has 21 berths alongside two large piers. The berths are specialized for particular port industries, with one for motor boat servicing at 150 m length, two for dry bulk cargo (430 m long), 8 large size berths for general cargo (between 160 and 334 m), 3 midsize general cargo berths (between 50 and 97 m), two ro-ro terminals (141 and 164 m) and finally 5 container terminals (between 295 and 350 m). The depth of water at the quays varies between 5 and 10 m. The vessels in the port are protected by two breakwaters from all kinds of effects caused by the weather and sea. Sea crafts of the port comprise 3 tugboats up to 2500 HP and 2 mooring watercrafts.