A World War II merchant marine ship is attacked by Nazi submarines in the seventh book in this action-packed middle grade series! Perfect for fans of the Hero and Scout books.

A year after Pearl Harbor, cabin boy Julio and his loyal Boxer, Jack, join the US Merchant Marines on a dangerous mission to bring supplies to troops on the Pacific front.

But when their convoy is attacked by German U-boats, their ship sinks, leaving Julio and Jack in a lifeboat fighting storms, sharks, starvation, and sickness. Can Julio and Jack help save the crew—and stay alive—as they search for land in the vast South Atlantic Ocean? 

• Brave Hero Dog: Jack is more than a pet—he’s a loyal Boxer and a rated Able Seaman who will risk everything to protect his boy, Julio, from the dangers of the open ocean.
• US Merchant Marines in WWII: Experience the untold story of the brave merchant marines, the lifeline for troops on the front lines, as they face attacks from German U-boats in the treacherous South Atlantic.
• Shipwreck and Ocean Survival: After their ship is torpedoed, Julio and Jack are cast adrift in a lifeboat. They must battle fierce storms, circling sharks, and starvation to find their way back to land.
• Found Family: Stranded with a small group of survivors, Julio must learn to trust an unlikely ally as the crew forges a new family in their desperate fight to stay alive.