XtremeJ,
Thanks for your info. I had figured the crosshairs would go on the target, but I was wondering more about the graduated lines under the crosshairs.
The questions I was wondering about were more along the lines of :
Do the different length lines represent different aiming points for different dive angles? altitudes? ship sizes?
Perhaps a ranging device to estimate distance to a known size ship (US destroyer???)?
Thanks again for any info,
Debuman