Subjects were sailing North along the south Padre Island beach 19 miles north of the South Padre Island jetties.  The operator was on a northward course about 1 mile off shore of the beach.  The operator stated that they encountered a rouge wave that caused the vessel to capsize.  Both the operator and passenger were thrown out of the vessel when it capsized.  They had to swim for over one hour to reach the shoreline.
South Padre Island