Polar_Diagram_387 Wing Keel, 150 Genoa Published September 1, 2011 at 540 × 720 in Understanding Polar Diagrams Polar_Diagram_387 Wing Keel, 150 Genoa You need to be logged in to see the rest of this content. Catalina380-IA members, please login. To join please fill out a membership application (Association->Membership Application) and send a check to the address on the form.