Onega Bay Onega Bay The Onega Bay () is located in the Republic of Karelia and Arkhangelsk Oblast in Northwestern Russia, west of the city of Arkhangelsk. It is the southernmost of four large bays and gulfs of the White Sea, the others being the Dvina Bay, the Mezen Bay, and the Kandalaksha Gulf. The area of the bay is . The Onega Bay is long and - wide. The average depth of the bay is , and the maximum depth is . The bay freezes in winter. Onega, Kem, and Vyg Rivers flow into the bay. The bay has numerous islands.
Onega, Russia limited passenger service on the Onega Bay. The Onega is served by the Onega Airport which has weekly passenger flights to Arkhangelsk and to the "selo" of Purnema on the Onega Peninsula. Close to the town, there is also an uncompleted military air base, Onega Andozero. In 2003, the Russian inland oil shipping company Volgotanker started using the White Sea-Baltic Canal for exporting fuel oil. The scheme involved delivering oil by river tanker, over the canal and into a floating transfer terminal near the Osinki Island in the Onega Bay, 36 km north-east of the port of Onega, for transfer