The rudder may also be curved or warped in similar manner by lever action.
To ensure rigidity the rudder must be stayed with guy wires.
Gliders as a rule have only one rudder, and this is in the rear.
The ship's rudder got loose, and was secured with difficulty.
I used the paddle as a rudder, and to push floating timber away.
A sudden shift of the rudder shook the Vulcan ...