This is the bit of Chertsey - and the only bit - that caused us to get stuck in two of the Stratford canal locks, 45 and 47.
You can see it here just to the right of the muddy patch, in line with the rearmost cross plank.
We will shave a bit off it in the hope that it won't cause so many problems in future, there or elsewhere. Overall it was good to see that Chertsey is good and straight with very few lumps and bumps. Our difficulties at Morse lock on the Chesterfield last year were more likely due to depth than width, with hindsight. Napton and Hurleston still to try!