Which character in the story "The Open Boat" didn’t survive?

In the tiny lifeboat launched from the sinking ship, Commodore, there is the cook, a heavy man who is out of shape and unused to physical labor. There is also the oiler, a young man named Billie who is quite accustomed to hard physical work, as this is the kind of work he has done on the steamer ship. The correspondent, a journalist, is more used to intellectual labors than physical, and the captain is injured. We would expect, then, that the cook, the captain, or even the correspondent would be most likely to perish, as they are the least suited to survival in these harsh conditions. However, it is actually the oiler, Billie, who dies, helping to show that nature does not care about fairness or justice.