The Integrated Mapping FOr the Sustainable Development of Ireland's MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey Ireland (GSI) and the Marine Institute (MI). The Magnetometer dataset is an auxiliary dataset that measures the magnetic field or field anomalies at a particular location. Data is collected on an ongoing basis as part of the yearly INFOMAR Surveys. The data is collected as part of INFOMAR surveys onboard research Vessels. No further processing is done on this dataset. The Magnetometer dataset is an auxiliary INFOMAR dataset used for to measure magnetic field variations, this is particularly important in the detection of shipwrecks. For specific information or to request this data, please visit The Marine Institute’s Data Request service: https://www.marine.ie/data-request None