Sounds like all the info needed has been posted alredy. Here is my shameless self promotion of my tutorial in link below.
http://www.subsim.com/radioroom/show...eting+tutorial
Is there anyway to convert my tutorial into a pdf so I upload it to subsim?
As far as interception, the hunt thread by Wasserman covers that well. Interception isn't much different than plotting the targets course and speed.If I sight the target at say 9500m. I gets its course and speed and then extend its track out about 20k. I generally set a course to intercept the target about 12k to 15k down its track. Distance depends on how fast the target is traveling. I need to get in position without getting too close that the target can sight me. This distance varies by mod and weather but is generally 6500m during a clear day.