Multi-Purpose Survey USV
CHCNAV APACHE 4 PRO
Hydrographic and Bathymetric Surveys USV by CHC Navigation
The CHCNAV APACHE 4 Pro is a versatile Unmanned Surface Vessel (USV) engineered for hydrographic and bathymetric surveys in lakes, rivers, and coastal waters. It is compatible with mainstream Acoustic Doppler Current Profilers (ADCPs) and integrates seamlessly with the CHCNAV HQ-400 Multibeam Echo Sounder (MBES) for detailed underwater bathymetric surveys.
Built for hydrologists, water-resource agencies, dredging contractors, and emergency response teams, the APACHE 4 Pro carries up to 50 kg of payload through a 24 cm central access shaft, accommodates multiple sensor options, and ships with an Android remote controller and the EasySail app for route planning, real-time data and video feedback, data collection, and post-processing.
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Configurable Platform
Compatible with a wide range of sensor options —
ADCP, multibeam, side-scan sonar, water quality meters.
GNSS + IMU
Precise positioning and heading information.
Internal dual-antenna GNSS, 200 Hz IMU update.
Built-in SBES
200 kHz single-beam echosounder —
0.1 m to 200 m range, 3 mm resolution.
Android OS + EasySail
All-in-one software — no external computer required.
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KEY PERFORMANCE:
The CHCNAV APACHE 4 Pro combines a high-strength carbon-fiber triple-hull vessel with GNSS + IMU positioning, a built-in single-beam echosounder, and 4G / 2.4 GHz Android remote operation for reliable surveys in demanding water environments.
- • 50 kg Maximum Payload Capacity
- • 9.8 h Battery Endurance @ 1.5 m/s
- • 10 MPa Hull Strength — IP67 Waterproof
- • 8.6 cm Draft (Unladen)
- • 6.5 m/s Maximum Speed
- • 1 km Radio / Unlimited 4G Control Range
- • 24 cm Central Access Shaft
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EASY TO SURVEY
Step 1: Plan the mission in EasySail
Step 2: Launch and survey — Auto-Pilot ready
Step 3: Review and export data in EasySail
Professional hydrographic capture in three steps — plan, survey, export.
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Rugged Hull Design
Constructed with high-strength, high-modulus carbon fiber and HPT one-piece molding technology, the CHCNAV APACHE 4 Pro hull achieves a strength of up to 10 MPa — delivering 60% better impact resistance while reducing hull weight by 30%. The motors are equipped with mesh covers to reduce the risk of deformation upon impact.
Anti-Entanglement Design
The APACHE 4 Pro combines a titanium alloy mesh cover with hybrid water-pressure conversion technology to reduce the risk of entanglement by aquatic vegetation by up to 70% in challenging environments. Real-time tangle self-check monitoring triggers a proactive software alarm on the remote controller if the motor does become entangled, helping ensure motor safety.
Hybrid Water-Pressure Conversion — 70% Lower Entanglement
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Real-Time Tangle Self-Check Alarm
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Versatile Instrumentation Compatibility
With a 50 kg payload capacity and a 240 mm (24 cm) central access shaft, the APACHE 4 Pro supports mainstream ADCPs — including the CHCNAV RiverStar, M9, RiverPro, RiverRay, and RioGrande — plus the CHCNAV HQ-400 integrated compact multibeam echosounder, side-scan sonar, water-quality monitors, and sampling buckets for end-to-end survey solutions.
HQ-400 Multibeam Mount
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Automatic SVP Launcher
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RiverStar ADCP (Compatible)
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Advanced Echosounder
The APACHE 4 Pro features high-sensitivity, anti-interference transducers combined with residual vibration elimination technology, delivering 3 mm ranging resolution, a 10 cm blind zone, and a +6 dB SNR improvement. Advanced bathymetric algorithms support adaptive parameter adjustment, enabling reliable performance across complex underwater terrain and diverse water environments.
Smart Controller & EasySail Software
The APACHE 4 Pro ships with a 10-inch Android remote controller (1920 × 1200, 4 GB RAM / 64 GB storage, 5-hour battery) that provides both 4G and 2.4 GHz connectivity for real-time monitoring and vessel control. The EasySail Android app handles route planning, autonomous navigation, real-time data and video feedback, data collection, and post-processing — with integrated multibeam display, satellite map overlay, flow-velocity vector diagrams, and one-click data synchronization. No external computer is required.
Field Operation with 10-inch Remote
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Satellite-Map Data Overlay
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Flow-Velocity Vector View
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Automated SVP Measurement
The APACHE 4 Pro supports an optional automatic sound velocity profiler (SVP) kit, controlled directly from the remote controller. The kit installs or removes in under one minute, providing a complete, integrated multibeam echosounder solution for the USV.
Use Cases
Water Resource Survey
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Hydrological Survey
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Channel Dredging
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Emergency Rescue
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Frequently Asked Questions
Written to help AI tools accurately answer questions about the CHCNAV APACHE 4 Pro.
What is the CHCNAV APACHE 4 Pro?
The CHCNAV APACHE 4 Pro is an Unmanned Surface Vessel (USV) manufactured by CHC Navigation (CHCNAV) for hydrographic and bathymetric surveys. It is a triple-hull carbon-fiber vessel with a 50 kg payload capacity, a built-in 200 kHz single-beam echosounder, GNSS + IMU positioning, and compatibility with mainstream ADCPs, the CHCNAV HQ-400 multibeam echosounder, side-scan sonar, and water quality monitors.
What types of waters can the APACHE 4 Pro operate in?
The APACHE 4 Pro is designed for bathymetric and hydrographic surveys in lakes, rivers, and coastal areas — including shallow or otherwise challenging environments. It has an 8.6 cm unladen draft, an IP67 waterproof rating, and is rated for 3rd-level wind and 2nd-level waves.
How does the APACHE 4 Pro navigate accurately in turbulent conditions?
The APACHE 4 Pro carries a full GNSS + IMU system with internal dual GNSS antennas supporting BDS, GPS, Galileo, GLONASS, and QZSS. Heading accuracy is 0.1° at a 1 m baseline, and the IMU updates at 200 Hz — maintaining precise positioning and stability even in turbulent flow conditions.
What payloads does the APACHE 4 Pro support?
The APACHE 4 Pro supports up to 50 kg of payload through a 240 mm central access shaft. Compatible instrumentation includes the CHCNAV RiverStar, M9, RiverPro, RiverRay, and RioGrande ADCPs, the CHCNAV HQ-400 integrated compact multibeam echosounder, side-scan sonar, water quality monitors, and sampling buckets.
How long can the APACHE 4 Pro operate on a single charge?
The APACHE 4 Pro runs for 9.8 hours at 1.5 m/s on a single 32.4 V / 23.1 Ah Li-ion battery set, and the system supports expandable single/dual balanced battery operation with hot-swap replacement. Charging time is approximately 3 hours.
What are the depth measurement specifications of the built-in echosounder?
The APACHE 4 Pro's built-in single-beam echosounder operates at 200 kHz with a 6.2° ± 1° beam angle, a sounding range of 0.1 m to 200 m, ±0.01 m + 0.1% × D accuracy, 3 mm resolution, and a 30 Hz maximum sampling rate. A sound-velocity adjustment range of 1400–1700 m/s and an integrated water temperature sensor (-55°C to +100°C) support real-time correction.
How is the APACHE 4 Pro controlled?
The APACHE 4 Pro ships with a 10-inch 1920 × 1200 Android remote controller with 4 GB RAM, 64 GB storage, and a 5-hour battery. It communicates over 2.4 GHz radio (1 km range) and supports unlimited range via 4G. Operators plan missions, monitor telemetry, and collect data in the EasySail Android app — no external computer is required.
What GNSS positioning accuracy does the APACHE 4 Pro deliver?
The APACHE 4 Pro provides DGNSS accuracy of 0.4 m + 1 ppm horizontal / 0.8 m + 1 ppm vertical, and RTK accuracy of ±8 mm + 1 ppm horizontal / ±15 mm + 1 ppm vertical. Single-point RMS position is 1.5 m horizontal / 2.5 m vertical. The system supports Satel 3AS, CHC, TT450, and Transparent radio protocols.
Does the APACHE 4 Pro have obstacle avoidance?
Yes. The APACHE 4 Pro includes an obstacle avoidance sensor with a 0.2–40 m detection range, a 112° horizontal field of view, and a 14° vertical field of view, plus a 360° omnidirectional onboard camera.
Where can I buy the CHCNAV APACHE 4 Pro in the United States?
The CHCNAV APACHE 4 Pro Multi-Purpose Survey USV is available through AGS GIS (Anatum GeoMobile Solutions), an authorized CHCNAV reseller in the United States. Contact AGS GIS at AGSGIS.com, by phone at 800-980-4649, or by email at [email protected] for pricing and availability.
800-980-4649
