Friedrich Benjamin Graf von Lütke (, Fyodor Petrovich Litke; – ), more commonly known by his Russian name Fyodor Litke, was a German-Russian navigator, geographer, and Arctic explorer. He became a count in 1866, and an admiral in 1855. He was a corresponding member (1829), Honorable Member (1855), and President (1864) of the Russian Academy of Science in St. Petersburg. He was also an Honorable Member of many other Russian and foreign scientific establishments, and a corresponding member of the French Academy of Science in Paris. Biography Friedrich came from the Lütke family (ru) of Brandenburgish origin and originated in Jüterbog. Count Lütke's grandfather was Johann Philipp von Lütke, a German Lutheran preacher and writer on physical science and theology. In 1745, Johann went from Germany to Moscow as pastor of a Lutheran parish in order to spread Lutheranism in the Russian Empire. As a youth, Friedrich attended a Lutheran German-speaking school. His maternal language was German and he always spoke Russian with a German accent. He remained a practicing Lutheran. Lütke started his naval career in the Imperial Russian Navy in 1813. He took part in Vasily Golovnin's world cruise on the ship "Kamchatka" from 1817 to 1819, where one of his crewmates was Ferdinand Wrangel. Then from 1821 to 1824, Lütke led the expedition to explore the coastline of Novaya Zemlya, the White Sea, and the eastern parts of the Barents Sea. From August 20, 1826, to August 25, 1829, he headed the world cruise on the Senyavin, sailing from Kronstadt and rounding Cape Horn. At the beginning, he was accompanied from Copenhagen and the Baltic Sea by Capt. Mikhail Nikolaievich Staniukovich who was in command of the sloop Möller. The scientific team included Heinrich von Kittlitz (ornithologist), Karl Heinrich Mertens (botanist) and Alexander Postels (mineralogist). During this voyage he described the western coastline of the Bering Sea, the Bonin Islands off Japan, and the Carolines, although he discovered only one new island (Eauripik, the expedition is noted for having visited every inhabited island in the Caroline Islands (with the exception of Yap) and for compiling an extensive ethnographic account. In particular, the expedition spent three weeks in the Nomoi Islands, which had been last visited by Pedro Quiros in 1565. The team collected over 8000 plant, animal and mineral samples. In 1835, Lütke was appointed by Tsar Nicholas I of Russia as tutor of his second son,