The Undersea Warship: A Fantastic Tale of Island Adventure by Oshikawa Shunro

Pirates! Shipwreck! Hunger! Wild Animal Attacks! After pirates sink a steamship on route from Italy to Japan, a young boy and a young man land on a not-so-desert island in the Indian Ocean. When electric lights and submarines were high-tech, Oshikawa Shunro, a father of Japanese science fiction, wrote this tale that would be the inspiration for the Japanese science fiction motion picture ATRAGON.