Abstract: A system to be installed on a sail-boat for furling a spinnaker (1) and for remote fitting of the spinnaker (1) to a boom (2) swivel-mounted on the mast (3) of the sail-boat comprises a stay (4) offset with respect to the stay for the jib (5), a furling device (6) secured to the offset stay (4), at least one boom swivel-mounted on the mast (3), a spinnaker (1) fitted in the central part of its belly with at least one supple link (17) which can be attached to the furling device (6), a circular sheet (11) knotted at the end (9) of the boom (2) and passing through the tack of the spinnaker (1), the foot (13) of the mast (3) and a point (14) on the mast (3) at a predetermined height to serve as a topping lift for the articulated boom (2), said circular sheet (11) being passed through a cleat ( 12) and manoeuvered from the sail-boat cockpit to lower and raise said articulated boom (2) and bring the far end (9) of said boom into contact with said spinnaker (1).