Windsurfer

A windsurfing vessel, such as a surfboard or aquaplane equipped with a sail, the apparatus comprising in combination:

• an elongated vessel hull capable of supporting a rider thereon, the vessel hull having at least one transverse separation joint along which it is separable into a plurality of longitudinally adjoining hull sections;
• a mast extending upwardly from a midportion of the hull, being attached thereto by means of a universal joint;
• a sail carried by the mast, including rigging means attached to said mast and sail, respectively, for converting wind in the sail into motive power on the vessel body, in response to manual adjustment of the sail and mast position by the rider;
• at least two hollow spine members extending longitudinally through at least a major portion of the hull's length and across its separation joints, the spine members being likewise longitudinally separable at each separation joint of the hull;
• means for releasably attaching the hull sections to one another, to form a substantially rigid structural assembly, said section attaching means including tensioning cables extending through the hollow spine members;
• and
• means for rotationally interlocking the adjoining hull sections at the separation joints.