U.S. Army Corps of Engineers (USACE), Galveston District hydrographic surveyors prepare their EdgeTech 6205s bathymetry and side-scan sonar before getting underway to conduct a survey, June 9. Side-scan sonar emits pulses that measure the intensity of the signal return to locate objects and provide an understanding of the differences in material and texture of the ocean floor.

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Photo by: Carlos Gomez |  VIRIN: 220609-A-OL640-0032.JPG

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