Tom Swift And His Jetmarine;

Plot

Tom Swift, Jr., and his associates try to unravel the relationship between the dog coins and the mysterious blackouts near Spaniel Island.
The Jetmarine, the second great invention of Tom Swift, takes the young inventor into a desperate battle with bold modern pirates who have been ravaging the sea lanes off the Atlantic coast. The atom-powered, two-man submarine is launched just in time for Tom and his pal Bud to set out to rescue Tom's father, who has fallen into the hands of the pirates. The wily enemy pulls no punches in trying to wreck the amazing Jetmarine that out speeds any sub and is able to
plunge miles to the ocean floor. Breathtaking running battles through hurricanes and gunfire, thrilling struggles with undersea monsters, imprisonment and escape from the pirate stronghold are part of the excitement of this second book in the new TOM SWIFT series.