It cannot move vertically when stationary
So, it would be easier to control it by thinking of it as operating an airplane
Of course, it is designed to automatically rise to the surface when it is still
Roll stability is automatic and only possible when moving & VTOL is not 0

There is no diving depth limit
Since the cockpit is located at mid-height of the submarine, it does not lock on to the destroyer when slightly floating

How to operate:
VTOL Thrust
Trim Descent/Ascent
Yaw Ship Direction
Pitch Cannon Elevation
Roll Turret Direction

Also, includes other Submarines

Caution These Submarines don't support automatic Roll Stabilizing

Not Armed Version
Torpedo Version

P.S. Khabarovsk is currently building