Question 4237 Deck General

The correct answer is B) outboard from the center. When the tops of the propeller blades in a twin-screw engine installation turn outboard from the center, the maneuvering qualities are most effective while going ahead. This is because the outward turning of the propeller blades creates a lateral thrust that enhances the vessel's ability to turn and maneuver. The other options are incorrect because: A) turning to port would reduce the lateral thrust, C) turning inboard toward the center would also reduce the lateral thrust, and D) turning to starboard would have the opposite effect of the desired outward lateral thrust.