That i know off theres no portholes on 6 or 7 deck.
There's definitely a fair few portholes on deck 6, but none on 7. Warwick's book shows the hospital ward with a porthole, plus you can count them from the outside yourself. Even on 11-11-09, final departure, with all portholes lit, you can count down the rows of portholes to deck 6 ones illuminated. They must have been amazing when underway!
s for aquarium views i am not 100% sure but i think theres a hole where you can overlook the propellers.Ill try and confirm this.On the photo i have circled it out.
As Myles says, these were put in specifically in relation to the Grimm wheels in 1987, to investigate/observ how they worked or didn't. My father got to look out of them in April 87, before she arrived back in Southampton - but I think by that point they'd already gone wrong! I remember, aged 14, being freaked out at the idea of an underwater window!
Fascinating topic Louis, thank so much!!