On the Boat Deck there were 6 Staterooms labeled "T", "U", "W", "X", "Y", & "Z".
On A Deck there were 35 Staterooms.
On B Deck there were 102 Staterooms all styled in different periods.
The most expensive cabins were located here: B-51, B-53 and B-55 were all connected by a private promenade, idem for B-52, B-54 and B-56. The odd cabins were used by Bruce Ismay, the even cabins were booked by the Thayer family. In the 1997 Film Titanic, the DeWitt-Bukater family is booked here.
On C Deck there were 148 Staterooms.
On D Deck there were 50 Staterooms.
On E Deck there were some First Class staterooms, but alternating with Second Class Saterooms.