Abstract: Apparatus for generating surfable waves. In a first preferred embodiment, the invention comprises a buoyant hull member designed to be towed by a conventional speedboat or other like watercraft. The hull member preferably has a generally chevron-like shape with elongate, forward-facing sides defined by contoured sidewall portions that produce tubular waves suitable for surfing when advanced through a body of water. Preferably, such hull member is comprised of first and second wave generating beams that are attached to one another via a hinge at the point of the chevron. In a second preferred embodiment, the invention comprises at least one, and preferably a pair of elongate wave generating beams that are detachably fastenable to opposed sides of a conventional speedboat or other similar watercraft. Each respective beam is designed to extend in a generally diagonal fashion rearward from the bow of such watercraft.