A book about seas and oceans, about the history of their discovery, about wonderful sailors and naval commanders, about how the sea serves man. Like any encyclopedia, it contains a lot of useful and interesting information, presented clearly and fascinatingly thanks to the talent of the writer and artists. Everything can be found here: equipment of sailing ships, fundamentals of star orientation, flags and uniforms, types of marine animals and sea nodes, etc., etc. This book was the cherished dream of all the boys of the 70s. I think it still remains out of competition and is an order of magnitude better than any modern translation book.