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 and Mikhail Lazarev 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.

Faddey Faddeyevich Bellingshausen or Fabian Gottlieb Benjamin von Bellingshausen was a Russia German cartographer, explorer, and naval officer of the Russian Empire, who attained the rank of admiral. He participated in the first Russian circumnavigation of the globe, and subsequently became a leader of another circumnavigation expedition that discovered the continent of Antarctica. Like Otto von Kotzebue and Adam Johann von Krusenstern, Bellingshausen belonged to the cohort of prominent Baltic German navigators who helped Russia launch its naval expeditions.