"The Dreadnought Boys on a Submarine" by John Henry Goldfrap is an adventure novel written in the early 20th century. This book follows the young inventor Channing Lockyer, who is set to launch his revolutionary submarine while facing opposition from individuals who seek to sabotage his efforts. Lockyer is joined by the daring "Dreadnought Boys," specifically Ned Strong and Herc Taylor, as they navigate the treacherous waters of invention, deceit, and espionage. At the start of the story, we are introduced to Channing Lockyer as he firmly rejects an offer from Jasper Ferriss to sell his submarine design to a foreign power, emphasizing his loyalty to his country. As the tension builds surrounding the imminent government tests on the submarine, the narrative shifts to the arrival of the young naval recruits, Ned and Herc, who are excited about their new assignment to test Lockyer’s creation. However, lurking dangers manifest as the disgruntled ex-foreman, Anderson, and a conspirator named Gradbarr plot to undermine Lockyer’s efforts by sabotaging the submarine. Their plot unravels amidst the mounting excitement leading up to the submarine's launch, setting the stage for thrilling escapades and unexpected twists. (This is an automatically generated summary.)