Sefine Shipyard, established in 2007 under Sefine Denizcilik Tersanecilik Turizm San. ve Tic. A.Ş., has swiftly risen to prominence as a key player in Turkey’s maritime industry. Located in Yalova-Altınova along the Marmara Sea coast on a 250,000 m² site, it is one of the region’s largest shipyards, capable of simultaneously handling new shipbuilding, repair/maintenance/conversion services, and large steel structure projects. With a 90,000 DWT Post-Panamax dry dock and a 120,000 D HAP Aframax floating dock, Sefine offers high-capacity, top-quality services, distinguishing itself as the leading shipyard in both scale and operational diversity.

Exporting new vessels to maritime powerhouses like Norway, Italy, the Netherlands, the UK, Estonia, and the Faroe Islands, Sefine holds the global top spot in live fish carrier construction. Having completed over 50 shipbuilding projects and exported products and services to 43 countries, it was named the export champion in the Shipbuilding Category in TİM’s 2020 “Turkey’s Top 1000 Exporters” survey. As a Koloğlu Holding subsidiary, Sefine employs over 6,000 people, driving innovation in autonomous and unmanned marine vehicles through R&D while contributing significant value to the industry and national economy with its world-class offerings and continuous investments.