Fabian Gottlieb Thaddeus von Bellingshausen (Russian: Фадде́й Фадде́евич Беллинсга́узен, tr. Faddey Faddeevich Bellinsgauzen; 20 September [O.S. 9 September] 1778 – 25 January [O.S. 13 January] 1852), a Baltic German naval officer in the Imperial Russian Navy, cartographer and explorer, ultimately rose to 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. 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.