I did a search here and didn't find anything, I doubt I'm the first to notice this.
I made a mission near the north pole and added some enviromental objects "iceberg" "iceberg5" "iceberg25". Gave them a random start box.
I can never see them with ownship HF active sonar. As i get closer to them with truth on, the "x" greys out like dead platform.
AI subs can pass through them with no collision, but the berg doesn't get "killed" like it did when I got near them. One sub changed depth from 555ft to 77ft while passing through the iceberg while on a transit tatic.
Is it me, or do icebergs "not work" in DW?