[se5a]

ok, you might get away with not having the textures, as long as you have the models...

shipsets have the
3d model
this is a .txt file with a .X extension
the texure for the above
this is a .bmp it is called from the .x file
it has flags
which are .bmp
and portrates
these are .jpgs which are an image of the renderd ship 'photos' if you like of the ship.
there's also AI, names and other files.

you may get away without having the textures... but I doubt it SEV will probibly give errors, not sure on this.
you may get away with removing the portrates, might have a little more luck there.
removing the flags will result in the server slecting at random annother flag - permanantly.

but removing all this stuff is going to be more trouble than it's worth just to save a bit of hard disk space.