The turbine rotor of the ship in the figure has the mass, radius of gyration and speed given in the table and rotates clockwise when viewed from the stern. The ship pitches with simple harmonic motion, the bow moving 6° above and 6° below the horizontal, with a period of 20 s. Determine (a) the maximum angular velocity of precession (answer in rad/s) and (b) the maximum gyroscopic couple (answer in kN·m). Also state the effect of this couple on the ship when the bow is rising (checked against the model solution; not marked separately).