A Regional Geophysical and Sampling Survey in the northern North Sea. Report: Brett, CP. 1973. Cruise Report on Project 73/08. MGU Project 73/08. (IGS Report No. 32; BGS report WB/MG/73/32) and BGS shipboard interpretation report WB/74/1. Navigation: Primary - Integrated satellite navigation system with doppler sonar. Secondary - Decca Hi-fix Survey: Askania GSS-3 Gravity Meter Barringer Magnetometer 6000J (max) Sparker System MS47 Transit Sonar ORE Pinger Huntec Seismic Recorder System.