HM is registered in Brazilian Navy Hydrographic Center – CHM. The company is able to carry out bathymetric surveys of Special Order, frequently used to nautical charts updates and navigation.

HM performs single, double frequency and multibeam surveys, using state of the art instruments. Multibeam bathymetry is performed with R2Sonic echosounder integrated to Applanix inertial motion sensor. Positioning is solved by L1/L2 bands GPSs, operating in RTK mode, assuring great precision. It is worth to highlight, a special order bathymetry carried out by the company that was used to update the Brazilian Nautical Chart 1312.