What is the setting of the novel, "The Cay?"

The novel "The Cay" by Theodore Langhans Taylor was a young adult novel with the setting in the Caribbean islands.  The story is narrated by a blind man named Phillip. He is recalling his youth in the story, and begins when he is 11 years old.  "The Cay opens in February 1942 on the island of Curacao, then part of the Dutch West Indies. When Phillip is ship-wrecked, the setting shifts to an unnamed cay deep in the Devil's Mouth, long U-shaped coral banks in the Caribbean."