A Lacoste&Romberg AIRSEA gravimeter was installed in the mess room, firmly secured to the wall (Fig.10). The positiong data were provided by ISMAR's EGNOSS DGPS Trimble DFM-32, trough the GGA,GLL,ZDA and RMC NMEA sentences. The system's console was positioned in the acquisition room by running RS-232 cables. A Marine Magnetics Sea Spy magnetometer was towed astern on the port side, at distance of 130m from stern (Fig.11. The data were collected with MM SEALINK and ISMAR's MAGREC.
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