It's pretty big. I don't go, I only went once and that was when I was working for a company that had a stand there, we had a twenty year anniversary party there.
There are plenty of wooden boats there too. It's the largest boat show in Britain.
I can't get the pictures to download but here's a link to the boat show homepage.
I'm not that bothered either way to be honest, it's just that whenever I've mentioned I'm from Southampton to anyone with a passing interest in boating they start banging on about the boat show.