The book "Battle Ships of the Japanese Navy 1918-1945" is a comprehensive history of the development and deployment of submarines in the Japanese Navy during World War II. The author, a renowned naval historian, provides a detailed account of the evolution of submarine technology and its impact on the war at sea. The book covers the design and construction of Japanese submarines, their weapons and tactics, and the role they played in the war. It also explores the challenges faced by the Japanese Navy in developing and deploying these advanced vessels, and how they were used to devastating effect against Allied shipping. The book begins with an overview of the pre-war period, describing the early experiments with submarine technology and the gradual improvement of designs and capabilities. It then delves into the critical years of the war, when Japanese submarines were deployed in large numbers to attack Allied shipping convoys and naval task forces. The author highlights the innovative tactics developed by the Japanese, such as the use of midget submarines and human torpedoes, and the devastating impact these had on Allied operations. The book also examines the response of the Allies to the threat posed by Japanese submarines, including the development of new technologies and countermeasures such as sonar and hunter-killer groups. The author argues that the war at sea was a crucial aspect of the conflict, and that the deployment of submarines was a key factor in the eventual defeat of Japan. Throughout the book, the author emphasizes the need for a comprehensive understanding of the technological process of developing modern knowledge as the basis for the survival of humanity and the unification of people in a warring state.

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