I guess the houseboat was out of penton hook marina. We went round there in the dinghy in the summer to check everyone was behaving themselves and I did not notice this particular floating object but it could have been hiding.
I thought Chertsey lock was narrower than shepperton but turns out it is wider. Optical illusion I guess.
Why madness ? If all was legal could be regarded as helpful cooperation ?The agency took the side timbers off a few years back to enable someone to transit Shepperton lock.
Madness
A few days heavy rainfall and it would have been too high. They had to pick their time, I would guess, with no margin for error.It looks to me like a new one going somewhere. It's not finished yet, the final exterior cladding is not yet fitted and the top section of roof was left off so it would go under the bridge.
By the snug fit, I would say the designer got it right and it's bang on the maximum size that would fit.
Why madness ? If all was legal could be regarded as helpful cooperation ?