Contacts appearing near me

[Shelton]

Hi all

I have the stock standard SH3 v1.b installed and just one question.

From time to time, I will see in the nav screen a contact that is about say 60 kms away - now this contact has not been picked up my visual or hydrophone but I can see it on the nav window - what exactly is this contact? I mean if I haven't picked it up by my crew then should it not be there?

I think this is not realistic as my crew has not picked up this contact but I can see it in God's view so to speak -

Can i turn this feature off?
And what is this contact - a radio message that i dont get?

I have realism set at 57%.

Regards
Shelton.