Deep Water Survey

When performing bathymetric surveys in deep bodies of water (like seas and oceans) for marine construction projects like dredging or offshore energy, multi-beam survey technology aboard a custom vessel is typically utilized. A multi-beam echo sounder attaches to a boat sends out a wide array of beams across a “swath” of the waterbody floor. The multi-beam system pings sound waves in a fan shape of narrow adjacent beams that bounce off the seabed and return to calculate the distance to the seafloor. As the beams are bounced back from the waterbody floor, the data is collected and can be processed in real time on the vessel during the survey. On the other hand, for smaller bodies of water a single-beam beam survey is often used. Single-beam bathymetry measures the water depth directly under the boat. Gtg Geo Technicals Solutions Pvt. Ltd. are used to measure water velocity by transmitting sound waves reflected off sediment and structure in the water, the streamflow data is used to aid in bathymetric mapping.