Hi Scruffbag
If you are confident enough to hand edit a mission with a text editor you can do the following:
In the mission file, if you add a ship as infrastructure, you'll find something like the following section (where the type_id will identify the particular type of ship):
[unit.25]
id=9283
type_id=3869
position_lat=S10 18.5054
position_lon=E150 20.0834
position_alt=+105
position_pbh=0.0,-10.0,100.0
damage=50
You can adjust the alt parameter for the altitude, and the pbh parameter to make the object list to one side, go down by the bow etc as follows:
position_pbh=0.0, = pitch, + to tilt by stern, + to tilt by bow
position_pbh=n.n,-10.0,n.n = yaw, + to port, - to starboard
position_pbh=n.n,n.n,0.0 = heading
Hope this helps
BuV
EDIT: forget to say too that you can do the same for aircraft as infrastructure. Playing with the 'damage' percentage can also have some interesting effects.