There are stories from the Pacific War that settle into the mind with a kind of heavy clarity. They do not shout. They do not demand. They simply sit there and remind us that the ocean has a long memory. Today we are stepping into one of those stories, the night when USS Sea Devil went hunting in the East China Sea and crossed paths with a former passenger liner that had become something far more tragic.

Hawaii Maru began her life carrying travelers who dressed for dinner. By the winter of 1944 she was carrying soldiers, gasoline, ammunition, and the burden of a war that was already slipping away from Japan. What happened when Sea Devil found her was swift, violent, and final. It was also a moment that reveals the strange mix of skill, fear, and consequence that shaped submarine warfare.

This is that story.

The story of USS Bonefish on November 29, 1943, is the kind of moment that captures the strange rhythm of submarine warfare. Long stretches of waiting and watching suddenly turn into a burst of violence that decides everything in a few minutes. Bonefish had been working her way through the Flores Sea when a thin smear of smoke on the horizon pulled the crew straight into the hunt. What followed was a disciplined stalk, a clean attack, and a hard escape under the weight of depth charges.

This introduction sets the stage for the attack itself. It was a morning that began like any other, filled with routine checks and quiet tension, but it quickly became a textbook example of how a trained crew, a steady captain, and a little luck could change the course of a day. It was the silent service at its sharpest.

On this episode of Patrol Reports we return to one of the most remarkable moments in the entire Pacific submarine campaign. The date is November twenty first 1944. The place is the dark and storm driven waters of the Formosa Strait. The submarine USS Sealion is running on the surface through wind, rain, and near zero visibility while trying to track a Japanese formation that includes three battleships. Her skipper, Lieutenant Commander Eli Reich, carries the memory of the first Sealion that was lost in the opening days of the war, and the torpedoes in his forward tubes bear the names of the men who died there.

What follows is the only successful attack by an American submarine that sent an enemy battleship to the bottom. The destroyer Urakaze vanished in an instant. The battleship Kongo died in fire hours later. It is a story of risk, resolve, and a decisive strike that changed naval history.