The Bolt Tightener is a fantasy short story by Sarena Ulibarri. Born of a nightmare, this story can be read online at Light Speed Magazine. It's very short and takes little time to read. It's an interesting tale, though I found it predictable. I kept waiting for it to go someplace unexpected, but it ended as I had thought it would.
Thar be sea monsters indeed.
I read this story as part of the Once Upon a Time Challenge Short Story Quest.