Olympic promenade deck cabins

[Casper]

Hi all. in 1929 during Olympics refit, the A deck was renamed promenade deck, B deck was renamed A deck and so on. a cabin on fx. A - deck would be called A, followed by the number, so I'm wondering what a cabin on the promenade deck would be called? Would it just be the number, or maybe P followed by the number?

 

[Fernando MG]

Cabin numbering became the word "Prom" followed by the number: PROM-23, PROM-24... In Mark Chrinside´s great book "Olympic, Titanic, Britannic" you can find a first class deckplan from 1934 (if I remember well), where this type of cabin lettering appears.

 

[Casper]

Thank you so much