ok, first many thx for your answers, i must say english is not my native language, but i bite me through the wiki and the helpfully links..
Also sorry if my question a little bit noob, but i think...mhhmm..between ww2 and now, theres some little things different..
I try the mission with the kiloclass once again without Sonarcrew/Radarcrew and without "Truth" so i hope to learned the classification easyier, i have a little problems with the Assign the different Contacts..
I will report you immidiately
(in the last try, i was frustrated, surfaced to get a look, then the last what i see was a rocket..no good idea)