The Doyle Utility Power Sail (UPS) is the link between a headsail and a spinnaker, with a wider usable wind range than either.
It's the first sail for cruisers who've done away with cumbersome, overlapping genoas but don't want to give up power in light air, or performance at any wind speed while reaching or running.
The UPS is lightweight. It sets and furls on its own luff rope and furler. It goes upwind and downwind. It flies like a spinnaker, but cannot collapse like a spinnaker, even when sailing as close as 33 degrees apparent. The effective wind range of a UPS is 33-180 degrees apparent.
The UPS sets on its own flexible Vectran line so there\'s no need to remove your furling genoa, and it stores in its own bag when not in use.
When sailing hard on the wind the jib and main work almost as one, and thus the combined elliptical profile determines the aerodynamic efficiency. When eased off, or reaching, the sails act more independently and the geometry of each is critical to performance. The sail designers at Doyle have developed shaping techniques that support critical roach area in headsails without the need for battens so you can enjoy the efficiency of an elliptical form and have a sail that can be easily furled! Thus, not only does the Doyle UPS provide more area for light air and for off the wind sailing it provides much greater efficiency!