Report: Kenolty, N. 1971. Cruise Report - Geophyical work in Scottish Waters on RV Vickers Venturer 1970. (IGS Report No 27) Navigation: The Decca Mk 12 was used throughout the survey. Radar positioning was also used. Equipment: The echo-sounder on board was a Marconi Fishguard and was used throughout the survey. A Kelvin Hughes Transit Sonar was used, printout being through a 9 inch Mufax wet-paper facsimile recorded. Technical details for this survey contained in BGS report WB/MG/71/27