Not quite sure...

...what this is, but as it was from the roll of film snapped on my walkabout Coleraine Marina I'm guessing it was part of a wooden hull of a boat.  I think I had the close-up filter on the front of the lens, so I'm not even sure anything much is in focus but since when did that matter?  On Ilford Warmtone RC paper with a bit of sepia toner after-effect: