Hydrographic Survey Software for Windows, Load topographic or nautical maps, create singlebeam soundings, generate DTM's (Digital Terrain Models), generate depth contours, generate cross-sections, volume calculations and more. The software can be used with various map formats including: GeoTIFF, Microstation DGN, ARC/INFO, MapInfo MIF/MID, AutoCad DXF files, IHO S57/S63 Electronic Natutical Charts and ESRI shapefiles.