Tandem split divergent winglet

A tandem split divergent winglet for an aircraft, comprising:

• a forward sail having a leading edge that extends outboard and downwards from a leading edge of a wing of the aircraft, and the leading edge curves aft directly from the wing leading edge with a smaller radius of curvature near an outboard end of the wing and an increasing radius of curvature to a tip of the forward sail,
• wherein the wing is a high-wing extending from an upper portion of a fuselage of the aircraft,
• wherein the forward sail is canted downwards with respect to the wing, and
• wherein the forward sail comprises a continuous concave curvature facing a fuselage of the aircraft;
• an aft sail having a trailing edge that extends linearly outboard from a trailing edge of the wing before curving aft and extending partially from the forward sail and partially from the outboard end of the wing,
• wherein the aft sail is canted in upwards with respect to the wing, and
• wherein the aft sail comprises a continuous concave curvature facing the fuselage;
• and
• an integrated light formed within the aft sail, wherein the forward sail is configured to shield a cockpit window of the aircraft from light emanating from the integrated light;
• wherein the integrated light illuminates through both an upper surface and a lower surface of the aft sail without extending to a leading edge or a trailing edge of the aft sail.