The final chord on the lower deck is
4.8 ladders.
You will see them a little less than anything, but the big-eyed will see.
Only these details were included. The steps themselves were not provided, even the instructions do not describe how this is done. Here is my version of the execution. On a real ship, the principle of connection was different, but if you start from blanks, you can do it like this (as I will show) and it will also be correct.
First I tried them on locally... they came up, but with a little - there is a nuance, at the end I will show how I corrected it.
To begin with, I polished the front and inner surfaces, since they cannot be processed later.
Next, I calculated the distance between the sidewalls (a).
а = width of the opening (where the ladder is installed) - 2b (two width of the racks) - 0.4 mm (grinding after gluing from both sides by 0.2 mm)
If everything is calculated correctly, then the finished staircase can fit into the opening for it.
Next, I glued all the PVA parts.
And after drying, the glue ground the edges of the steps and 0.2 mm on each side of the wall of the side racks.
Well, I also polished the remaining surfaces where there were traces of laser cutting.
Here is the before and after result.
But when I tried on the stairs in their openings and put a figure next to it on a 48th scale, I realized that something did not fit...
If the front staircase (with 4 steps, marked purple) fit and everything with it was fine, it corresponded to the anatomy drawing...
... then the rear staircase (with three steps, marked green) if installed in the opening, it completely blocked it. And this is logical, because in the anatomy of steps not 3 but two!! Therefore, I completely redid the rear staircase, removing the upper step and making the staircase itself and the step already wide.
And after fittings, I realized that it was the right decision. Since now the staircase did not overlap the opening and now it looks like this.
I didn't have time to take pictures after fixing (the sun set). So, if everything is as planned, tomorrow I will photograph everything against the background of a figure on the 48th scale.
And to be honest, I was shocked how cramped it was inside the ship!! That's right very cramped! Wait and you will see for yourself.