I had this problem running GWX 3.0 a while back and thought it was perhaps the 16km atmosphere module so I disabled it (via JSGME) and tried without it, but the problem still showed up - see below:
I'm running GWX3.0 and the following mods:
GWX - Alternative Flotillas
GWX - Captain America's Officer Icons
GWX - Enhanced Damage Effects
GWX - No Medals on Crew
GWX - Open Hatch Mod
GWX - Integrated Orders
GWX - Merged Campaign
SH3MoonMod for JSGME
LRT - No Collision Damage for GWX 3.0
LRT v2.04 Full for GWX3.0
EDE- LRT 2.04 Full patch
Integrated Orders- LRT 2.04 Full patch
Open Hatch - LRT 2.04 Full patch
Hitman Compass Graphic for GWX3.0 for JSGME
GWX Alt Flot fix for JSGME
Any idea why this is happening or how to fix it so that the ships don't float above the horizon like this?