Publishing house "Thought" offers to the attention of the Soviet reader a translation of the book by Georges Blok "The Great Hour of the Oceans." This book, dedicated to the Atlantic Ocean, is very wide and varied in content. It tells about voyages in the era of great geographical discoveries, about the expeditions of the Normans, about the activities of conquistadors and pirates, about ship races and the first flights of aircraft across the Atlantic, about shipwrecks and flights of brave loners across the ocean; the legend of Atlantis is recalled again and information is given about drilling the bottom in order to extract oil. The events of the distant past alternate with the latest. Facts of great historical significance coexist with incidents completely insignificant. The work is written in a good living language (this is usually characteristic of the works of French authors), it is easy to read and with interest.