I'll have to look into that. I used the free MS Paint 3D app that comes installed with Windows 10 but it can be a real challenge getting the borders defined.
I also want to try image stacking. It is a technique used by model railroad photographers among others to avoid the issue of having a model half in focus and half out of focus and simulate a more realistic depth of field as if the subject was much larger.
You basically do a whole series of bracketed photos slightly changing the focal point, than "stack" them resulting in a sharper more evenly in focus end result. That way you could have several ships in a shot and have them all in focus, or have a front to back shot with even focus throughout the length