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**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.** **Comes with a pull-out collectible poster and map!** 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?

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