Report: Tully, MC. and Sunderland, J. 1970. Cruise Report for MV Surveyor, Barra Head Area. MGU Project 70/05. (IGS Report No 14) Positioning: Decca Hifix Echo Sounding: Kelvin Hughes MS 32 Sonar Systems: Simrad Sonar. Seismic Systems: Sparker System: EG&G sparker system with 263b hydrophone streamer and 254 recorder. Most lines run at either 1kJ or 2kJ. Gravitymeter: Presumed to be LaCoste and Romberg Air Sea gravity meter. Magnetometer: Varian magnetometer. See also IGS report 73/14.