"The Lost Continent" is a novel by Edgar Rice Burroughs, an American fiction writer, who created such great characters as Tarzan and John Carter of Mars.
In 2137, Pan-American Navy Lieutenant Jefferson Turck is commander of the aero-submarine Coldwater, tasked with patrolling the 30th meridian from Iceland to the Azores. Disaster strikes when the vessel's anti-gravitation screens fail, dooming it to wallow upon the surface of the ocean, and the engines fail, leaving it adrift. As its wireless radio has failed as well, Turck cannot even summon help.