• 469 Point Breeze Rd. Flemington, NJ 08822
Passaic Multibeam 2014

Multi-beam bathymetry is an advanced sonar surveying method that collects detailed, three-dimensional maps of underwater terrain by emitting a fan of sound beams beneath a vessel’s hull. Unlike a single-beam fathometer—which ping-pongs one beam straight down—multi-beam spreads dozens to hundreds of beams across a wide swath. This approach delivers:

  • Broader coverage per pass, reducing survey time
  • Enhanced accuracy and resolution for elevation changes and submerged structures
  • High-density point clouds that reveal bedforms, wrecks, utilities, and more

Ideal for rivers, lakes, and coastal bays, multi-beam bathymetry supports applications from dredged-material volume calculations and grounding investigations to environmental site remediation and bridge planning.

This video provides an up-close view of our survey screen.  The top image shows the location along the river as well as shoreline structures and features. The bottom left is the sweep window. Each ray represents an individual sounding beam. Combined they constitute a single sweep of data. The line where they end at the bottom shows the profile of the river bottom for that sweep. The bottom right window is the waterfall window. Each individual sweep is plotted at the bottom one after another which results in a three dimensional color coded image of the survey transect.

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