Rudder

A large plank at the back of a ship used to steer and direct its course.

Boat propelled and steered by oars (Egyptian, ca. 1981–1975 BCE)
Boat propelled and steered by oars (Egyptian, ca. 1981–1975 BCE) (Metropolitan Museum of Art, Public domain, MMA) Steering oar, rudder

About Rudder

The rudder was a large plank at the stern of a ship used to direct its course. This could also take the form of two long oars, one extending from each side either behind the ship or in front of it. By moving the rudder or steering oars from side to side, it was possible to control the direction of the ship.

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Key References

Acts 27:40

Cutting away the anchors, they left them in the sea as they loosened the ropes that held the rudders. Then they hoisted the foresail to the wind and made for the beach.

James 3:4

Consider ships as well. Although they are so large and are driven by strong winds, they are steered by a very small rudder wherever the pilot is inclined.

All Scripture References (2)

Acts (1)
Acts 27:40

Cutting away the anchors, they left them in the sea as they loosened the ropes that held the rudders. Then they hoisted the foresail to the wind and made for the beach.

James (1)
James 3:4

Consider ships as well. Although they are so large and are driven by strong winds, they are steered by a very small rudder wherever the pilot is inclined.