We could see the weather starting to change and it was turning cold, so headed back to Derwent6. The wind really got up and then the rain buffered Derwent6 around like a tin can. With the fire lit, all the hatches closed, and the kettle brewing nothing seemed to bother us. In the afternoon it was read the papers, a bit of telly, and Sunday steak.While we were at the locks we noticed a funny thing in the middle of the lock..does anyone know what it is ? It has lots of what look like solar panels all round it and looked quite new.