How to send a contact report?

[John Pancoast]

Originally Posted by Hebe Vollmaus

Yes.
Look in "SH3:\data\Cfg\AirStrike.cfg":
"Enemy Air Strike Probability Increase on Radio Messages Sent="

If you are detected, enemy See-units (Destroyers, Speed-boats, Trawlers) in Range will run highspeed to your area also. You can only break this sittuation by submerge and try to hide you for a while from any enemy sensors.
Keep in mind, Snorkel and Periscope can be detected.

Greetings.

If you're meaning the scope can be detected by radar, then that's a flaw in the game.
That wasn't possible until the 1970s iirc.