Playing GWX in fall 1939.....Not too long ago I actually derped up with time compression while trying to get back into attack position again on a convoy after finishing off a straggling cripple. This all happened in the middle of the night as well.
Well I was on 64 or 128 TC when all of a sudden my WO says "warship spotted". I go to the bridge and a destroyer is headed right towards me head on at about 600 meters!!!! I'm just like "oh god".

. "Thanks for the prompt notice mr watch officer!! You couldn't warn me a bit earlier??!! You

!!" (Visibility on this night was pretty good, bright red on fog meter and low winds)
Then I DONT crash dive and just keep steaming straight ahead and the destroyer passes me on my starboard side at literally about 2-300 meters. He kept steaming straight on towards the vicinity of the now sunken cripple. I was just like "that just happened".

He must have heard the cries of help from the merchant I had just finished off a few kms back but how in the world did he not see me??!!
I don't know if this had anything to do with it (it should at least) but I hit this same escort with a torpedo the previous morning as I was waiting to finish off his dead-in-the-water escort buddy with a second shot. He had been coming straight toward me so I shot him head on and to my dismay, one torpedo did not do the job (just like his buddy), but after he got hit, instead of continuing after me, he ran away and high-tailed it back to the convoy. So maybe because of this damage he had a reduced ability to do see me? He had reduced efficiency due to dead crew? Or was it a program glitch?