Louie and the other men continue to fight off sharks. When Louie decides to start hunting the sharks, he is pulled underwater by one of them before he succeeds at capturing a five-footer. The men harvest the liver of that shark and then repeat the process until their stomachs become full.
Mac’s condition deteriorates fast, and it is clear that he will soon die. The men go to bed one night, and in his sleep Louie hears a great exhale. He knows Mac has died. In the morning Phil and Louie pay their respects and cast his body off to sea. The sharks leave it alone. Not long after Mac’s death, Louie and Phil reach the final stage of starvation and don’t even feel hungry anymore. Death is approaching, but their minds are as sharp as ever. They reach an incredibly calm part of the sea called the doldrums. They are awed by its beauty. On the fortieth day, Louie hears singing in the sky, but Phil hears nothing. On the forty-sixth day, a storm comes and the waves bring them up to great heights. At the peak of one such wave, they see an island in the distance.
The men ride the waves of a storm and eventually get caught in a typhoon. After making it through the violent storm, they are disoriented and think they see an island near them. It turns out to be a Japanese boat. The men are hauled aboard.
At first, Louie and Phil are treated very harshly. When they encounter the captain of the ship, however, they are treated with respect and fed biscuits. Soon after, the men are blindfolded and carried into an infirmary. In the infirmary, Louie and Phil are weighed and find out they have both lost about half of their body weight. The doctor brings them a feast of food and they devour it. After, they are brought into another room where an officer asks them to tell their story. The officers don’t believe that a Japanese plane would try to shoot them in the way they describe, but when Louie describes the plane, they go silent.
For the next two days, Phil and Louie are treated well. But they are then told that they will be sent to Kwajalein, a place known to Americans as “Execution Island.” They are told that their lives cannot be guaranteed once they get to Kwajalein. On July 16, Louie arrives at Kwajalein, and the Japanese start to treat him harshly. He is transported to a wooden cell with a hole in the floor serving as a latrine. Phil is moved nearby to a similar situation. As Louie looks at his deteriorated body, he begins to weep.
In Chapter Sixteen, Louie, Phil, and Mac use effective thinking and survival skills to turn their opponents, the sharks, into food. They use every bit of remaining strength and willpower to fight off the aggressive sharks and then to capture and to dissect the animals. The men must work as a team in order to make all of this happen. In these collective efforts, Mac redeems himself from the first night when he stole the chocolate by fending off the sharks. In his final hours, he sacrifices the little bit of life he has left to help save Phil and Louie. Though Mac had to push himself beyond his limits to save Louie and Phil, through this action he redeems himself.