Which statement best describes the primary function of a ship's rudder?

Which statement best describes the primary function of a ship's rudder?

• A. To provide propulsion
• B. To steer the ship
• C. To anchor the ship
• D. To measure depth

Answer: (B)

The rudder’s job is to steer the ship. When you turn the helm, the rudder swings to one side, deflecting the oncoming water. That deflection creates a sideways force on the stern, causing the vessel to yaw and change direction. The steering effect depends on speed and hull shape, but the fundamental purpose remains directing the ship’s course. Propulsion is what moves the ship forward, provided by the propellers and engines. An anchor is used to hold position in shallow water or when stopping, not to steer. Depth is measured with a depth-sounding device or sonar, not the rudder.

The rudder’s job is to steer the ship. When you turn the helm, the rudder swings to one side, deflecting the oncoming water. That deflection creates a sideways force on the stern, causing the vessel to yaw and change direction. The steering effect depends on speed and hull shape, but the fundamental purpose remains directing the ship’s course.

Propulsion is what moves the ship forward, provided by the propellers and engines. An anchor is used to hold position in shallow water or when stopping, not to steer. Depth is measured with a depth-sounding device or sonar, not the rudder.