Gulf of İzmit

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Coordinates: 40°44′N29°39′E / 40.74°N 29.65°E / 40.74; 29.65


Gulf of Izmit Gulf of Izmit, Turkey.JPG
Gulf of İzmit
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Gulf of İzmit (Sea of Marmara)

Gulf of İzmit (Turkish: İzmit Körfezi), also referred to as Izmit Bay, is a bay at the easternmost edge of the Sea of Marmara, in Kocaeli Province, Turkey. It's ancient names were Gulf of Astacus , Sinus Astacenus (Ancient Greek : Ἀστακηνὸς κόλπος), [1] Olbianus Sinus (Ancient Greek : Ὀλβιανὸς κόλπος, romanized: Olbianos kolpos) [2] and Gulf of Nicomedia . [3]

It took the names Gulf of Astacus and Sinus Astacenus from the city Astacus. [4] [5]

The gulf takes its name from the city of İzmit, other cities and towns around the bay being Gebze, Körfez, Gölcük, and Altınova. In the east–west direction, it extends for a length of about 48 kilometres (30 mi), while in the north–south direction its width varies from 2 to 3 kilometres (1.2 to 1.9 mi) at the narrowest spots to about 10 kilometres (6.2 mi) at its widest. The İzmit Bay Bridge is a suspension bridge that bridges the gulf.

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