Days after Japan’s attack on Pearl Harbor in 1941, Hitler declared war on the U.S., unleashing U-boat submarines to attack American ships. Suddenly the waves outside Louisa June’s farm aren’t for eel fishing or marveling at wild swans or learning to skull her family’s boat—they’re dangerous, swarming with hidden enemies.

Her oldest brothers’ ships risk coming face-to-face with U-boats. Her sister leaves home to weld Liberty Boat hulls. And then her daddy, a tugboat captain, and her dearest brother, Butler, are caught in the crossfire.

Her mama has always swum in a sea of melancholy, but now she really needs Louisa June to find moments of beauty or inspiration to buoy her. Like sunshine-yellow daffodils, good books, or news accounts of daring rescues of torpedoed passengers.

Determined to help her mama and aching to combat Nazis herself, Louisa June turns to her quirky friend Emmett and the indomitable Cousin Belle, who has her own war stories—and a herd of cats—to share. In the end, after a perilous sail, Louisa June learns the greatest lifeline is love.

* A Children's Book Council Notable Social Studies Trade Book * CDE Recommended Reading 6th-8th Grades * 2023 Capitol Choices * VLA Cardinal Cup for Historical Fiction * Bank Street College Best Book