I'm going Portsmouth-Cherbourg too!
I guess it's P&O, as long as it doesn't sink it'll be marvellous. It's supposed to be the fast one, so I reckon that means it's pointier at the front end than the others.
I'm on the Tuesday afternoon crossing though, I'll leave a present for you in the Gents, it should be easy enough to find.
H
PS If anyone needs any further tips on naval architecture, just let me know.