The book tells about the circumnavigations of Russian military sailors on sailing ships in the first half of the 19th century - the expeditions of I.F. Kruzenshtern and O.F. Lisyansky on the sloops "Nadezhda" and "Neva", M.P. Lazarev on the ship " Suvorov", O.E. Kotzebue on the brig "Rurik", V.M. Golovnin on the sloop "Diana", F.F. Bellingshausen and M.P. Lazarev on the sloops "Vostok" and "Mirny" and many others. Readers can expect to meet many remarkable Russian geographers, ocean explorers, admirals, officers, sailors, and natural scientists who selflessly served the Fatherland and world science.