Navigation light

As we were in the Erskine area this morning we had a short walk along the River Clyde to see if there were any interesting birds on the water. Saw a sizeable group of Goldeneye but they were too far out for a decent photo with my 300mm lens.
I have seen this navigation light before and really like it’s shabby graffitied look so am adding it for the Derelict Sunday Challenge with thanks to Marlieske.