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Geophysical equipment types used included: Echo Sounder, Magnetometer, Pinger, Sidescan Sonar, Sparker and Transit Sonar. The survey was undertaken by British Geological Survey. This survey was conducted by the Institiute of Geological Sciences (now British Geological Survey), the aim was to acquire data to the highest standard of quality, there were no documented procedures or processes in place to describe the QC and management of the data after it was acquired. Information for this survey is sourced from IGS report 73/9. Navigation - Decca main chain. Geophysical equipment: Echo-sounder - Kelvin Hughes M.S.32; Transit sonar - Kelvin Hughes; Sparker - E.G. and G.; Magnetometer - Varian.

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