Would it be possible to include UTM coordinates in Reefmaster? Reason for asking is to enable to make 3d charts or structure scans for the "land" marked. In other word, use the Reefmaster in a professional setting? OLEX is a Norwegian (expensive) 3D chart software that can be used with UTM coordinates. However, using sonar viewer and Reefmaster, one could probably do the same if UTM coordinates was an option. For a much more reasonable price. The attachment shows an area of which a customer wants a seabed survey to be used in engineering of a planned quay. Obviously the coordinates on the picture is given in UTM coordinates and needs to be converted before I can use them on my plotter. To set the points indicating the corners I now use Ozi explorer that is able to read UTM, but not able to produce a chart.