Okay, I figured I'd post a status update for anyone who's interested.
I have completely given up on getting CAotD to run on Linux. The DOSBox/Win 3.11 combination seems like a troublesome and clumsy solution to a seemingly simple problem and I have decided to bypass it for a much simpler option; I will just run the DOS version of the game.
I have placed an order for the original version of AotD (DOS CD-ROM. Manual included!
) on amazon.com and am waiting for its arrival. In the meantime,
for testing purposes only, I have acquired an illegitimate copy of the game and I am happy to report that it runs almost flawlessly with DOSBox under Linux. It is slightly choppy, and this is most apparent in the sound. But perhaps I will be able to tweak DOSBox to get the the game running a bit more smoothly. Nevertheless, it works and I now have a subsim that I can play on my Linux machine. I am happy with this.