A very early neap tide today so got out in Kittiwake just after eight. It was still and clear but bitterly cold, and the bow crnchd crshsd scrshd through the thin layer of ice. Despite the scale difference, the sound was exactly the same as you hear in the monster ferries plying the Baltic from Stockholm to Helsinki in winter.
I am always surprised at how often the water in the harbour freezes, at least at the edges. It is salt, after all. Apparently, the ice forms on the mud flats and saltings, and the tide floats it off as it come in.