A Seaspy by Marine Magnetics magnetometer was used. Sensor was towed at 180 m from stern, on the port side. Data acquisition was by Marine Magnetic's Sealink software. During the acquisition a DTM of the anomaly data (IGRF 2010 model) has been continuously updated, and served well for planning purposes. A Lacoste S-54 Model ``Airsea System II'' gravimeter was used. System was installed near center of gravity of ship. In Messina an absolute measurement was performed at the dock.