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The present location of the South Magnetic Pole (SMP) in the southern ocean provides an opportunity to determine its position well removed from local (coastal) anomalies. An experiment is being conducted jointly by the Australian Bureau of Mineral Resources and Antarctic Division, Department of Science to make direct shipboard observations of the position and daily motion of the SMP. The technique involves determination of the horizontal component of the field (H) by using a gimbal-mounted three-axis fluxgate magnetometer. First-order compensation for the magnetic effects of the vessel is provided by a system of Helmholtz coils. During observations, the vessel is spun about a vertical axis so that any residual horizontal field due to the vessel can be eliminated by integration along two horizontal axes fixed in space.