The three rudder types are ____________, ____________, and ________________.

The three rudder types include balanced, unbalanced, and semi-balanced, which are based on their design and how they interact with the water flow.

A balanced rudder is designed so that the center of pressure is directly in line with the pivot point, which minimizes the effort needed to turn the rudder and helps improve maneuverability. This type often reduces the load on the steering system, allowing for easier control of the vessel.

An unbalanced rudder, on the other hand, does not have this alignment, meaning that it can create a larger torque on the steering system, requiring more effort to operate. These types may not be as efficient but can still be effective depending on the vessel design and intended use.

The semi-balanced rudder features characteristics of both types—it has some balancing but not enough to eliminate all of the torque on the steering gear. This gives it unique handling properties suitable for various maritime applications.

This understanding of rudder types is essential in the context of boat operation and navigational control, particularly in ensuring proper handling and steering efficiency under differing conditions.