Hey tugnut........those large [assumed as] automotive ventilation fan motors are very powerful, relatively low speed, high torque, near silent & low current drain
I can understand Micro gyros being used to alter the trim of P & S stabiliser fins on a surface vessel...but did not see any reference to them in the thread
Did I miss something?........as you also mention a gyro for the bow thruster??................keep the great images coming...... Derek