double-rudder pintle balance rudder

double-rudder semi-balance rudder

single rudder pintle semi-balanced rudder

single-rudder pintle balance rudder

single-rudder pintle semi-balance rudder

underhung rudder with rudder trunk

Pit-in-pit

access hole of rudder

active rudder

active rudder electric propulsion apparatus

active rudder motor

actual rudder angle

additional thrust rudder fin

aeration of rudder

aerodynamic rudder

aerodynamic rudder-control

after-piece of rudder

aileron-rudder interconnect

Air rudder