Wing on wing

Wing on wing designates a sail position in boats with sloop rigging, running "downwind", when the jib is held out by a spinnaker pole to catch more wind on the opposite side of the main sail.

Is a term used to define in fore-and-aft-rigged sailboat, when sailing directly away from the wind, with the sails set on opposite sides of the vessel with its foresail and mainsail opened to a 180-degree angle (e.g. with the mainsail to port and the jib to starboard) so as to maximize the amount of canvas exposed to the wind. 

The position of the boom is decisive for the avoidance rules . If possible, the main boom will therefore be left on the port side - otherwise every other sailing ship has to be avoided

The English term "´Goosewing" is also common for this sail position.

 References 

 Bibliography 
 Rousmaniere, John, The Annapolis Book of Seamanship, Simon & Schuster, 1999
 Chapman Book of Piloting (various contributors), Hearst Corporation, 1999
 Herreshoff, Halsey (consulting editor), The Sailor’s Handbook, Little Brown and Company, 1983
 Seidman, David, The Complete Sailor, International Marine, 1995
 Jobson, Gary, Sailing Fundamentals, Simon & Schuster, 1987

 Other websites 

Category:Sailing