I have activated MO+patch.
I do not know if it's my incorrect setting but I have not "ship spotted" advice.
In the first case I was at 1x time compression (always surface), I go to the turret and I see a Merchant at less of 400 mt, no one warned me.
In the second case I was at high time compression, I pass at 1x, go to the turret and.......I was in the middle of a convoy
(sorry for my English)
Best regards