Vostok was a 28-gun sloop-of-war of the Imperial Russian Navy, the lead ship of the First Russian Antarctic Expedition in 1819–1821, during which Fabian Gottlieb von Bellingshausen (commander of the ship) and Mikhail Lazarev (commanding Mirny, the second ship) circumnavigated the globe, discovered the continent of Antarctica and twice circumnavigated it, and discovered a number of islands and archipelagos in the Southern Ocean and the Pacific.

[1] Vostok was launched in 1818 at Okhta Admiralty shipyard, Saint Petersburg.

After repair in Sydney in Australia, the expedition explored the tropical parts of the Pacific, and on 12 November [O.S.

10 January] 1821 the sloops reached the southernmost point of their voyage at 69° 53' S and 92° 19' W. On 5 August [O.S.

Apart from the discovery of the world's sixth continent, Antarctica, 29 islands were mapped and complex oceanographic works carried out.