Rea and Komar (1975) investigated the formation of a hooked beach shoreline shape in the lee of a rock headland by the computer-simulation models. The modeling technique combined two one-dimensional cell systems aligned at right angles to each other so the beach erosion could proceed in two directions. This method was more versatile than a single one-dimensional model yet it avoided the complexity of a two-dimensional array. The results indicated that the shape of the hooked beach was dependent on the direction of wave approach, and the shape of the refracted-diffracted wave front. Many of the configurations could be fairly closely approximated by a logarithmic spiral within the shadow zone.