[quote by Vanjast]: The game engine/scope has a non-linear Field-Of-View (FOV). So in the vertical or horizontal, the makings are not right, effecting speed (horizontal) and range (vertical mast height) calculations.
I may have read through your response alittle too quickly

I didn't realise that the inaccurate FOV of the scopes would also affect the way a ship's length is represented! Sorry about that. That would certainly explain alot