Disclosed is a spoiler anchoring sail that counters the swinging and jerking of a sailboat during anchoring or mooring, thereby providing a convenient, comfortable and secure environment to sailors. The anchoring sail comprises a first wing, a second wing attached to the first wing at a common edge, and a spoiler attached to the first wing and the second wing at the common edge. The spoiler, the first wing and second wing are oriented in a manner, such that, an angle between the spoiler and first wing and an angle between the spoiler and second wing is greater than or equal to about an angle between the first wing and second wing. The first wing and the second wing cause dihedral effect and the spoiler is capable of cutting off wind to one side of the anchoring sail, while channeling the wind to other side of the anchoring sail.