Comprises details of the operations, field acquisition, results and interpretation of the seismic survey. Four lines totalling 17.5 miles of 6-fold reflection CDP were recorded. Objectives were to check for evidence of wedging of Upper Cretaceous beds onto the Beachport-Kalangadoo High, tie previous on- and offshore surveys, investigate structures, and attempt to map the top of the Crayfish sands. Two structures are indicated: Offshore from Geltwood Beach and onshore opposite Rivoli Bay; thinning onto these may indicate an area of wedgeout of the Sherbrook Group sediments. A more sophisticated recording technique will be necessary to enhance the deeper reflection data.