RoxAnn GDS Features Applications Technical FAQs   RoxAnn GD-S is the latest development of the RoxAnn System providing multi-beam mapping of seabed materials. This allows the surveyor to increase coverage of the seabed on each pass, thus decreasing survey time and costs. The system uses seabed reflectivity to classify material type; accurately calibrated. Up to 13 * 30 1:3 piezo composite elements. 200KHZ or 50KHZ classification. Centimetric bathymetry array and output.