You can do it in SH3 if you turn off the TDC and set the speed to 0, then the gyro angle can be controlled directly by rotating the bearing to target dial in the TDC. 
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"Enemy submarines are to be called U-Boats. The term submarine is to be reserved for Allied under water vessels. U-Boats are those dastardly villains who sink our ships, while submarines are those gallant and noble craft which sink theirs." Winston Churchill
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