In recent years, Shichiri-ga-hama Beach in Kanagawa Prefecture has eroded. The cause is assumed to be the discharge of sand turning around the Inamura-ga-saki Point that bounds the east end of the beach. To investigate the cause, field observations of the seabed by divers were carried out together with the sampling of bottom material offshore of this headland. Since sand transport around the headland was considered to occur mainly during high waves, wave crest lines offshore of the headland were determined from the satellite images and incident wave direction was measured during storm wave conditions. Numerical simulation of the nearshore current around this headland was also carried out under the oblique wave incidence and the sand discharge from Shichiri-ga-hama Beach was investigated in relation to the extent of oblique wave incidence around the headland. It was found that part of sand composed of Shichiri-ga-hama Beach was transported eastward turning around Inamura-ga-saki Point.