"Rudder#Aircraft rudders" . "hard over" . . "Rudder" . "aerodynamic rudders" . . "ship rudder" . . "rudder stock" . . "Rudder#Sternpost-mounted rudder" . "tail" . . . . "steering" . . . "rudder control system" . . "ship's rudder" . "Rudder" . "rudders" . "quarter rudder" . "air rudder" . "tail rudder" . "active rudder" . . . "ram steering gear" . "rudder head" . . "Stern-mounted rudders" . . . "rudder" . "sternpost rudder" . "Rudder, stern-mounted and vertical axial" . "steered" . . "rudder bar" . "sternpost-mounted rudder" . "stern-post rudder" . "quarter rudders" . . "internally-mounted spade-type" . . "shilling rudder" . "Stern-mounted steering oar" . "steering gear" . "rudder pedals" . . . . . . . . . . "steering oar" . "rudder post" . . "aircraft's rudder" .