Here you go CapnScurvy....
This screen will show you that the camera view in the CR has the wrong values coded. Its an easy fix. I fixed it myself in less than 5 minutes. And the fix is posted above. I loaded a untouched download of the FOTRS mod for the screen below.
If you look at this screen, I am at 140 feet. Maintaining depth. I should not be ascending. You can tell by the red light planes indicator next to the depth gauge, and the plane gauges themselves. This view should be level. The S boats are fine. The Fleet Boats are all tilted.