The book is devoted to an interesting and still in many ways mysterious issue - the ocean voyages of ancient peoples. It begins with a story about the oldest known traveler, the Egyptian Sinuhet, who lived two thousand years BC. Then information is given about the Argonauts, sung by the famous ancient Greek poet Apollonius of Rhodes, and about many other ancient ocean voyages. The author reports some new data obtained by him in many years of research. This makes the book interesting not only for a wide range of readers, but also for specialists.