I really liked this. I liked the ambiguity of it, both the ambiguity of the ending and the fact that it was never revealed exactly what the relationship was between the narrator and Harry; he could have been a brother or other relative, a boyfriend/husband, or just a close friend. Personally I read it as a romantic relationship but I like that it wasn't specified, because with the situation they're both in, their exact relationship doesn't really matter anymore as much as the fact that they clearly love(d) each other a lot.
The name of his ship, the Philoctetes, was also a nice mythological touch that really added to the story's themes about disability and abandonment and loneliness, for me. For those of you who aren't familiar with the myth, Philoctetes was part of the Greek army who went to fight in the Trojan War, but on the way to Troy he was bitten by a snake and ended up with a massive, painful festering wound on his foot. The Greek army, annoyed with his constant screams and how badly his wound smelled, abandoned him on an island before they got to Troy, and left him there until there was a prophesy at the end of the war that only Philoctetes could end the war, at which point they went back to the island and basically had to trick him into coming back and fighting. Every time the ship's name was mentioned I started thinking of Philoctetes as a counterpoint to the narrator, who is also alone and abandoned with a debilitating injury.
