Halifax ad uses narrowboats to make its point

We were sitting in the garden, enjoying the warm sun, when Jan said, "You'll be interested in this."
"What is it?"
"Have a look."
She passed me the Times Magazine, opened at a full page advert for the Halifax bank, featuring ridiculously large words on top of narrowboats on a canal.


Although the canal itself looks real - there's a bridge and a lock in the background - other things in the picture are obviously false. Aside from the giant words themselves, at least two of the boats look strange. The green one seems slightly too wide; and the maroon one has the most pronounced tumblehome I've seen on a steel narrowboat.


I handed the magazine back to Jan, who turned the page, and said, "Oh, there's more!" Another full page ad completed the bank's message. Funny - now both the green and maroon boats look more normal now. Their reflections certainly don't, though!


Is it my imagination, or is that a Grand Union lock?