Otto Neumann Knoph Sverdrup, polar researcher, ship's mate. Took part in Fridtjof Nansen's expedition to Greenland in 1888, captain of the «Fram» during Fridtjof Nansen's polar expedition 1893-96. In 1898, he started his own expedition with the «Fram», sailing around Greenland, but had to turn back, and instead discovered new, large parts of Ellesmereøya (the Ellesmere Island) and other islands that were given his name. In 1914, he took over the leadership of two Russian rescue missions with the ships «Eclipse» and «Hertha», to find three Russian expeditions in the area around Franz Joseph Land. In 1920, he headed a Russian expedition with the ice breaker Sviatogor in the Kara Sea. In 1921, he headed a trading expedition to Ob and Yenisey with the ice breaker «Lenin» and five merchant ships.