A fin or win' located at t' middle or front o' a rocket. Ahoy! Canard fins are often used on guided missiles since they make t' missile less stable and easier t' steer. Aye aye! Because canard fins move t' center o' pressure forward and tend t' destabilize model or high power rockets, shiver me timbers, they are only used for style or t' be true t' a scale representation.