Grand Duke Constantine Nicholaievich of Russia. Lütke was the first one to come up with the idea of a recording tide measurer (1839). They were built and installed along the coastlines of the Arctic Ocean and the Pacific Ocean in 1841. Lütke was one of the organizers of the Russian Geographical Society and its president in 1845–1850 and 1857–1872. He was appointed Chairman of the Naval Scientific Committee in 1846. Lütke was a commander-in-chief and a military governor of the ports of Reval (today's Tallinn) and later Kronstadt in 1850–1857. In 1855, Litke became a member of the Russian State Council (Государственный совет in Russian; a legislative entity that predated the Duma, which came into existence only in 1906). In 1873, the Russian Geographical Society introduced the Lütke gold medal. A cape, peninsula, mountain and bay in Novaya Zemlya, as well as a group of islands in Franz Josef Land, Baydaratskaya Bay, and the Nordenskiöld Archipelago and a strait between Kamchatka and Karaginsky Island, as well as two Russian icebreakers were named after him. Nereocystis luetkeana was named after him by Mertens (first as Fucus luetkeanus) and then described by Postels and Ruprecht. Lütke's contribution to the geography of Alaska During his voyage round the world on the Russian corvette Seniavin Lütke arrived at Sitka in 1827. From there he sailed to Unalaska, surveying the Pribilof Islands, St. Matthew Island and the Commander Islands, before arriving to Petropavlovsk, a harbor which he used as a base for further surveys along the Siberian coast all the way to St. Lawrence Bay by the Bering Strait. After finally returning to Kronstadt Litke published a 3-volume account of his explorations with atlases in Russian and in French, the latter being published in Paris and entitled Voyage autour du monde, : exécuté par ordre de sa majesté l’empereur Nicolas Ier, sur la corvette Le Séniavine, dans les années 1826, 1827, 1828 et 1829, par Frédéric Lutké, ... commandant de l’expédition. Partie historique, avec un atlas, litographié d’après les dessins originaux d’Alexandre Postels et du baron Kittlitz. Traduit du russe sur le manuscrit original, sous les yeux de l’auteur, par le conseiller d’état F. Boyé. Tome I–III. Very few copies were printed and especially the Russian original work with its nautical part became an extremely rare item. The nautical volume contains hydrographic and geographic details on the then little-known Bering Sea and Alaska obtained not