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Autonomous Bathymetric USV

The Apache 4 is an Unmanned Surface Vehicle (USV) that supports a wide variety of Acoustic Doppler Current Profiler (ADCP) systems available on the market. It offers an unmanned operation solution with a shallow draft, high navigational accuracy and stable hovering for hydrologists when measuring water flow velocity and discharge of a current section.



Hours of Battery Endurance

Max Speed of 


Meters Per Second

Maximum Payload of



Compatible  With


Payloads from Industry Leaders

ADCP Compatible

The Apache 4 is compatible with the leading ADCPs on the market for unmanned cross-sectional flow measurement solutions. The central cavity design can suit ADCP sensors such as the M9, RTDP 1200, RiverPro and RiverRay providing integration, portable solutions. The Apache 4 is fully integration with the compatible ADCPs providing positioning, orientation, power, waterproofing, 4G transmission, and more.

Single Beam Echo Sounder Included

Detection Range: 0.15 m to 200 m

Resolution: 0.01 m
Accuracy: ± 0.01 m + 0.1% x Water Depth
Frequency: 200 KHz
Sound Velocity Adjustment Range: 1300 m/s to 1700 m/s
Beam Angle: 6.5 + 1 degree
Data Type: CHCNAV, NAME SDDPT/SDDBT, Original waveform

The D230 is a single beam echo sounder making hydrographic surveying simpler and more productive. Advanced water depth analysis algorithm filters the secondary echo automatically and professional depth-keeping configuration ensures accurate results by eliminating noise interference. The gain, power and range are also adjusted automatically.

Accurate Positioning and Navigation

The Apache 4 integrates directly with the ADCP, Echosounder, and autopilot for stable position and heading as well as increased data accuracy. 

Why The APACHE 4?

  • 1.

    One-Man Operation

  • The entire project including calibration, mission planning, and processing can be accomplished by a single person
  • The Apache 4 is made of a durable yet lightweight mixture of carbon fiber and Kevlar fiber-glass weighing 7 kg allowing for easy transport
  • With no regulations for operating an USV, the Apache is quick and easy to use on any job
  • 4G connectivity allows RC control at all times in large bodies of water

  • 2.


  • The Apache 4 comes equipped with an obstacle avoidance radar system for maximum security
  • 360 camera with live video feed keeps the USV safe in case of difficult weather conditions or loss of visibility
  • The Apache 4 is completely autonomous and operate safely from shore
  • AutoPlanner and HydroSurvey combine to allow the user to create an mission, survey the area, and view the results without being put in danger

  • 3.

    Echo Sounder and ADCP Synchronization

  • Single beam sounding data can be used to verify the accuracy of ADCP bottom tracking data
  • The beam sounding data is fed directly into the ADCP flow measurement software to compensate for the unavailability of ADCP data
  • Provides water depth profile data associated with the flow velocity profile measurements


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