The Third World War found a Russian submarine on a combat cruise. After the use of nuclear weapons, the submarine finds itself in the 18th century. This is not only the century of enlightened monarchs, palace intrigues, the colonization of the New World and the rise of the Russian Empire, but also the century of numerous battles on land and at sea. Especially at sea. Naturally, any power will want to have as an ally such a formidable weapon as a submarine cruiser with full ammunition. Successes in naval campaigns, decisive victories in Europe, new knowledge and technologies - all this will lead the successful power to an unprecedented strengthening in the international arena and the flourishing of its economy. The possible accomplishments are breathtaking. It is even possible to reorganize the world and set it on a new historical path. Let’s say Russia becomes such a country... But will it? And will the submariners themselves choose this path, or will they prefer, say, the path of eternal sea wanderers? The book is recommended for reading by persons over 16 years of age.