The Single Beam Echo Sounder D230 is a single beam echo sounder making hydrographic surveying simpler and more productive. Particularly design for shallow water bathymetric survey, the D230 features and sounding accuracy of ±0.01 m + 0.1% x D and a detection range 0.15 m to 200 m. Advanced water depth analysis algorithm filters the secondary echo automatically and professional depth-keeping configuration ensures accurate results by eliminating noise interference. The gain, power and range are also adjusted automatically.