The Submarine Boys and the Smugglers (Unabridged)

In the quaint coastal town of Bayport, the Submarine Boys-Tom, Larry, and Andy-embark on a thrilling adventure. When a series of suspicious incidents plague the harbor, the trio suspects foul play. As they investigate, they uncover a sinister plot involving smugglers who are using submarines to transport contraband. With their trusty submarine, the Sea Serpent, the boys set out to expose the smugglers and protect their beloved town.
But danger lurks at every turn, and the Submarine Boys must use all their ingenuity and courage to outwit their adversaries and bring justice to Bayport.