Sophie’s Dad is a mysterious, elusive character who never appears in the novel. We’re told that he is the captain of an oil tanker, and is often at sea. In the second half of the novel, we come to realize that Sophie’s Dad is a stand-in for Hilde Møller Knag’s own father, Albert Knag—for this reason, we don’t learn much more about Sophie’s Dad; instead, the emphasis shifts to Albert.