The survey has been carried out on board of the R/V Bannock - CNR. During the cruise, a preliminary survey which main aim was the tectonics and stratigraphic reconstruction of Ionian Sea, a grid of single channel seismic profiles was collected using a 30 kJ - Sparker source (Teledyne Exploration, Houston - USA). From the original radio navigation system Loran-C, the coordinates have been later converted into geographical. The sparker profiles total 530 nm. The areas investigated during the survey J71 are: the eastern offshore of Calabria between Capo Spartivento and Punta Alice form the continental shelf to the abyssal plain (seismic profiles J71-J). The cruise has been carried out from 24th August to 11th September 1971. A. Ferriani was part of the technical team. PI was the Dr. S. Rossi.