dredging & edging

The other day, I read a boat blog that said they had spotted that rare sight - BW doing some dredging! I can't find which blog it was now, doh. Anyway, they are very busy along the stretch between Bollington and Macclesfield and I've been fascinated to watch how they are securing the canal edging. There's an orderliness about the process that I like:





First knocking in these great poles, attaching a sort of permeable plastic sheet (a dredgerman told me the name but I didn't hear right so looked it up afterwards - think it's called geomembrane), securing the outer row to an inner post and later, I guess, filling in-between with dredged mud. All very clever, I think!