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Photo Courtesy of ASV Global

Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities.

The primary focus of hydrographic survey is the collection of water depth soundings and seabed imagery using single-beam and multi-beam echo sounders and side scan sonar.  In addition to the sonar systems themselves, the quality and accuracy of the data collected is highly dependent on a range of external sensors that are used together with the sonar systems and software to provide an integrated survey system.  These sensors include GPS/GNSS positioning systems, heading reference systems, sound velocity recording instruments, and vessel motion sensors.


We offer the following products for these applications:

Sonar Systems   

GPS/GNSS Position & Heading Receivers

Sound Velocity Instruments and Profilers




Subsea Technologies also offers hydrographic products for both short and long-term rentals! 

Click here for available rental products.