Quote:
Originally Posted by ElAurens
2. The "Patrol Area x" mission objective that can never be accomplished. I.E. After completing your initial mission objective you are told to patrol a new area, and after dutifully mucking about well within 100nm of the center of the designated area for days on end, and after sinking numerous enemy ships, the mission is still unfullfilled.

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I've made no changes to SH4 in regards to this problem but I followed the directions/advice from another poster on "Guide: How to Complete a Mission"
http://www.subsim.com/radioroom/showthread.php?t=111509
When you are told to patrol an area, patrol it for 48 hrs.
I tried this and watched the clock and the Orders screen and sure enough, when 48hrs passed, the icon turned gray. I just tried to stay closer to the icon since I did not want to accidentally get outside the 100 NM radius and have to restart the clock.