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Hydrographic surveying

Hydrographic survey equipment

A hydrographic system needs to match the site and the measurement task. Discuss the complete configuration before selecting a platform.

Discuss your water project

The supplied configuration and included components are specified in your written quote.

CHCNAV APACHE 3 Pro
CHCNAV APACHE 3 ProReview a single-beam configuration for depth surveying.

What do you need to measure?

01 /

Depth & bathymetry

Define the survey area, water conditions, positioning and required depth output.

02 /

Volume comparison

Discuss the surfaces, reference basis and checks needed for the intended comparison.

03 /

Flow & discharge

Specify the measurement method and payload; a bathymetric package does not establish a flow-measurement configuration.

Explore APACHE options

Review APACHE 3 Pro, APACHE 4 Pro and APACHE 6 by their exact supplied hull, sensors, positioning and processing configuration.

Plan the workflow

Bring the project context

  • Area, depth, access and deployment conditions
  • Water conditions and relevant obstructions
  • Existing sensors and processing software
  • Coordinate and vertical-reference requirements
  • Required output and quality checks
  • Transport, operation, training and support needs

Discuss a configuration

Describe your intended task and deliverable so the platform, payload and workflow can be reviewed together.

Ask about hydrographic equipment

Choose the sensor for the measurement

Single-beam echosounders measure depth along a survey line. Multibeam systems measure a swath to build a more complete bed surface. Acoustic Doppler current profilers (ADCPs) measure water movement and support discharge calculations. Choose the measurement method before choosing the boat.

SensorMeasurementUseful specificationsTypical task
D270Single-beam echosounder200 kHz; nominal depth range 0.15–200 m; 0.84 kg.Compact depth measurements along survey lines; useful for cross-sections and reservoir work.
D390Single-beam echosounder200 kHz; nominal depth range 0.15–300 m; 12-inch touchscreen.An integrated acquisition system for depth profiles and hydrographic survey lines.
RS-1200 & RS-600ADCP / current profilerRS-1200: 1200 kHz; RS-600: 600 kHz; five-beam design.Measure water velocity profiles and discharge in rivers and channels, rather than treating depth alone as a flow measurement.
RS3600DADCP / current profiler1200 / 3600 kHz; nine-beam design; 2 kg.Dual-frequency current profiling for flow and discharge work across changing water depths.
HQ400Multibeam echosounder400 kHz; nominal depth range 0.2–150 m; integrated GNSS/IMU.Map a swath of the bed for detailed bathymetric surfaces and inspection work.
D60Dual-frequency single-beam200 / 33 kHz; nominal ranges 0.2–250 m / 0.8–1000 m respectively.Compare high- and low-frequency depth returns for survey tasks requiring two acoustic frequencies.
HN400MMultibeam echosounder400 / 550 kHz; nominal depth range 0.2–200 m; up to 145° swath.Collect wider bathymetric coverage for underwater terrain and detailed surface mapping.

Manufacturer figures are nominal operating limits, not guaranteed results for every site. Water conditions, bottom reflectivity, sound velocity, positioning, installation and quality control affect usable performance. Confirm the exact sensor, mount, power, software and APACHE variant with GLG; these are options to discuss, not included boat bundles.

APACHE 3 ProAPACHE 4 ProAPACHE 6RTK setup guides
Review a complete hydrographic setup