Bathymetric Surveying

hydrographic survey hydrosurveyor hypack

Who says you can't have the best of both worlds? Now, both the CastAway-CTD and SonTek SonTek-M9 systems are integrated with HYPACK 2016 hydrographic surveying software. What does this mean for you?

Simple and Fast. Water sound speed corrections are interpolated in both space and time with the fully integrated CastAway-CTD and HYPACK, delivering agility and accuracy to your surveys. Bluetooth communication integrated - no cables required!

Versatility. Survey under and around bridges with two available position references – GPS and bottom track (speed over ground) with SonTek-M9.

Flexibility. Complete, compact package for measuring bathymetry and correcting sound speed from a vessel of any size.

Features include:

  • Sound speed integration and interpolation (with CastAway-CTD)
  • Speed over ground (acoustic bottom tracking)
  • 5-beam depth soundings (50° swath) with SonTek-M9 and HYPACK® Max
  • Water column velocity mapping
  • Automatic data gridding and interpolation
  • 360° compass and two-axis tilt sensor
  • Interface for customer-supplied GPS and/or heading sensor

SonTek Products


The First Handheld Castable Instrument That Provides Instantaneous Profiles of Temperature, Salinity, and Sound Speed

The CastAway-CTD is a lightweight, easy-to-use instrument designed for quick and accurate conductivity, temperature, and depth profiles. Each cast is automatically referenced with both time and location using its built-in GPS receiver. The CastAway software displays profiles of the casts in addition to mapping the locations of the data collection points. Data integrate directly with RiverSurveyor Live and HYPACK software, and can also be exported to MATLAB for applying sound speed corrections.

The rugged, non-corrosive housing, AA battery power, and computer-free operation reflect the technician-friendly pedigree of the CastAway-CTD.

SonTek M9

Advanced River Discharge and Bathymetry Measurement Instrument

The SonTek M9 is the ultimate solution for collecting both discharge data and conducting bathymetric surveys. The industry-validated and reliable M9 is an all-in-one ADCP, seamlessly combining the durability of the award-winning RiverSurveyor-M9 with the adaptable bathymetric capabilities of the HydroSurveyor-M9, offering unparalleled data collection flexibility.