Gulf of İzmit

Coordinates: 40°44′N 29°39′E / 40.74°N 29.65°E / 40.74; 29.65

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. Its ancient names were Gulf of Astacus, Sinus Astacenus (Ancient Greek: Ἀστακηνὸς κόλπος),[1] Olbianus Sinus (Ancient Greek: Ὀλβιανὸς κόλπος, romanizedOlbianos kolpos)[2] and Gulf of Nicomedia.[3]

Gulf of İzmit
Gulf of İzmit is located in Sea of Marmara
Gulf of İzmit
Gulf of İzmit (Sea of Marmara)

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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