SV106 is a positioning and orientation series product that integrates positioning and orientation functions, can accurately provide ship position and heading, and realize dredging positioning and orientation functions with navigation software. The system has a positioning accuracy of 0.6 meters and a heading accuracy of up to 0.3 degrees RMS. It is equipped with an electronic compass that can maintain a stable heading when the satellite signal is interrupted for a short time, which is several times or ten times more accurate than the ship's magnetic compass. It can be used directly to replace the ship's magnetic compass for dredging navigation of grab dredgers, suction dredgers, and chain dredgers. Can completely eliminate the construction error caused by magnetic compass error.