I ve played with some old 3d models of stardestroyer and executor to caculate in the hull is vissible and i discover that:
In the ordinary SD there is no way to have the hull onscreen when the camera is in the bridge.
But the interesting is in Executor, is a possibility to see something because of the length it has.
Here some screencaps from where the hull possible is visible:
From the side at least we can see some detail...
Also i forgot to mention that a possible spot can be when we see vader to see the stars in the executor reveal.
-Angel
PS: offtopic a bit but in ROTJ camera angles in the executor bridge allows the hull to be visible.