Gemak Shipbuilding Industry and Trading S.A. is one of the oldest shipyards in Turkey, with a history dating back to 1969. The shipyard is located in the Tuzla suburb of Istanbul, north east of the Sea of Marmara at the entrance to the Bosphorus.

The main activities are the drydocking, repair and conversion of all types of vessels. Gemak took over the shares of Tuzla Shipbuilding Industry S.A, a new building shipyard located in Tuzla, Istanbul, in 2000. The yard deals with turn-key new building projects. Today, Mr Ismet Uner, a naval architect, is owner and chairman of both Gemak Shipbuilding Industry and Trading S.A. and Tuzla Shipbuilding Industry S.A.