Hull-contour of 3rd class D-Deck cabins D133 & D137

[TimTurner]

I'm trying to understand the layout of cabins D133 & D137.

These are stern cabins on D deck which follow the outside hull where it begins it's great arch over the rudder. The floors of these rooms are curved in the corner (about half of D137 has a sloped floor).

Both cabins have a corresponding porthole in the hull of the ship, but D137 (and possibly D133) have a partitioning wall which cuts off the cabin from the porthole.

Here are my questions: What did these partitions look like? Did they have some kind of window inthemt? Were they only waist-high with a shelf on top extending to the hull wall? If not, was there a means of accessing them?

Bonus question:
The Bruce Beveridge blueprints show the hull cavity aft of C137 as Storage, but I don't see any access to that space - where was it?

 

[B-rad]

To answer bonus question. looking at the bulkhead plans, reproduced in Titanic the Ship Magnificent vol. 1, there are what appear to be doors located on the bulkhead on E, F and G. These were 4ft by 2 1/2ft. I'm guessing, based merely on the fact that they are cut into the bulkhead, that these were hinged watertight doors, though I have no way of truly knowing.

 

[TimTurner]

Thank you.