Sea Discovery

Pipe and Cable Tracking Via a Diver Held System

Shark Marine Technologies introduced the latest in accessories for their Navigator, diver held sonar and navigation system. The SDG-N300 Digital Gradiometer allows a diver to locate and track any underwater pipe or cable of ferrous content. The SDG-N300 gradiometer is plug and playable with the Navigators Divelog software. The digital properties of the gradiometer allow the sensors to be “zeroed” thus eliminating any ambient magnetic fields in the area. When combined with an optional altimeter the SDG-N300 can also determine the depth of burial of the pipe. Using any one of the Navigator’s selection of positioning systems, (GPS, LBL, DNS) and Divelog’s mapping module, the diver may also track and record the location of the pipeline or cable for post processing and re-location purposes. Images of the pipeline may be simultaneously recorded using the Navigator’s USB connected video camera, or if the visibility is too restricted, its high resolution, multi-beam sonar. The gradiometers software module in the Divelog operating program provides an easy to read, graphical image of the position of the Navigator relative to the seafloor and the location of the pipeline being tracked.

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