The port that keeps redrawing itself

I keep dreaming of a harbor that isn't on any chart — the cranes still swing but there's no ship under them, just the sound of water ticking against empty concrete. The keeper's hut has my old logbook in it, and every page is blank except the date, written over and over in someone else's hand. I don't wake up sad exactly. It's more like the dream is asking me something I haven't learned the grammar for yet.