Hi All,
Over in the SH3 forum, I made a post about two firing/data acquisition methods which are historical and quite accurate upon testing, neither requiring AOB or speed of target at either method's most basic level:
http://www.subsim.com/radioroom/showthread.php?t=222377
Didn't want to keep these old German methods hidden from the SH5 folks!
Enjoy and gute Jagd!