At least one of the submarine bridges was built on an enormous gimbal, so it could be tilted to simulate the sub banking and turning and rising and diving, etc. Must have cost a fortune.
Photos of this are rare for some reason, but here are two:
Obviously, the above is a photo of Connery and Baldwin on the Red October’s bridge.
This appears to be a shot of the Red October’s bridge as well. Here you can see the more of the depth and height of the set.