Tom Swift and His Aerial Warship:
Tom's fame has brought him to the attention of nefarious foreign plotters who do not want him designing devices that could be used against them in the "European Conflict." Tom's latest invention, The Mars, is an armed dirigible airship. Tom has to figure out a way to fire artillery from a floating platform and convince the US Navy to purchase it. Naturally Tom's enemies will stop at nothing to prevent this and Tom struggles to overcome them (Tom Swift Unofficial Home Page).