The Ocean Wireless Boys And The Naval Code
出版商提供的簡介
In former volumes of this series the previous adventures of the lads have been described. In the first book, devoted to their doings and to describing the fascinating workings of sea-wireless aboard ocean-going craft. Other exciting incidents were described, and Jack gained rapidly in his chosen profession, as did his chum, Billy Raynor, who was third assistant engineer of the big vessel.