Some time ago, I borrowed a book from my father. It was about a water planet with huge storms and deadly monsters. There were a few islands where people could live. They moved between islands using iron-wings that they made from the iron of the settler ship used to move humans to the planet and was useless because of some problem when landing (or maybe not, I'm not sure about this last point). I'm not certain about the characters, but I think there was a young one who wanted to get his wings.
I lost this book some years ago and quickly forgot the title. Today I discovered scifi.stackexchange and I think that maybe you will remember the title or author of this book.