According to canon references, the Oberth class is around 150 metres long. Bernd Schneider over at Ex-Astris-Scienta seems to agree with my thoughts and those of others of similar geekery that this is too small and would make the ship inhabitable due to its odd configuration.
So, I printed out a forward and side view in the same scale and used the window configuration as a means to determine the scale. I guestimatd the position of the deck plating between the windows to give me a spacing of 2mm per deck on the print out. With the generally accepted standard deck height of 3m I divided 2mm by 3 to get 0.666666666666667 ( I may have missed one or two 6’s, I’m typing this from memory).
I measured the height at 89mm. So to get the height in metres I divided 89mm by 0.666666666666667. This gave me the figure of 133.5, which means that if one uses the vertical seperation of the windows to scale the ship, the Oberth is 133.5 metres high! A printed out length of 360mm boils down to 545 metres with the same math.
Once I drew the decks on the upper and lower hulls, I totalled 30 Decks! A far cry from the 5 to 15 deck estimates of the “screen accurate” dimensions.
Now I don’t know what to do for an MSD. The 150 to 250 Screen accurate size or the size I have calculated? 30 Decks seems too big for the Oberth for my liking. That makes it bigger than the Enterprise A. It’s only supposed to be a small science ship!
I think I might “ignore” the windows on the outer hull of the model and just wing this one.