The Benigraph Surveying System: Results of Field Trials

In the field of seabed surveying for nautical charting and offshore engineering applications, information on the topography is traditionally acquired by line surveys. The instrumentation is normally an echosounder with the required positioning, storage and presentation systems. Subject to geological aspects and survey specifications, the echosounder may be supplemented by a sidescan sonar, perhaps with fish positioning to obtain bottom information in between lines. To overcome the many shortcomings and uncertainties of these systems, the Benigraph seafloor surveying system has been specified and developed.