Compact Bathymetric Survey USV
CHCNAV APACHE 3 PRO
High Performance Single-Beam USV by CHC Navigation
The CHCNAV APACHE 3 Pro is a compact, professional Unmanned Surface Vessel (USV) engineered for autonomous bathymetric surveys in shallow water environments. It is purpose-built for channel mapping, river dredging, dam and hydropower inspections, reservoir volume estimation, and underwater infrastructure surveys.
Constructed with a high-strength, high-modulus carbon fiber hull and HPT one-piece molding, the APACHE 3 Pro is rugged, lightweight, and unsinkable. Its high-thrust brushless DC motor supports speeds up to 7 m/s, and its tightly integrated GNSS RTK + INS receiver maintains positioning accuracy even during temporary GNSS outages — such as when operating under bridges or near tall infrastructure. The integrated CHCNAV D270 single-beam echosounder ensures continuous, precise depth measurements with real-time sound velocity correction.
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Compact Turnkey Platform
1 m carbon-fiber triple hull —
single-operator deployment, transport, and recovery.
GNSS RTK + INS
Internal dual-antenna GNSS with 200 Hz IMU update.
Maintains positioning accuracy under bridges and in GNSS-denied environments.
Built-in D270 SBES
200 kHz single-beam echosounder —
0.1 m to 200 m range, 3 mm resolution, 10 cm minimum blind zone.
Android OS + EasySail
All-in-one software — no external computer required.
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KEY PERFORMANCE:
The CHCNAV APACHE 3 Pro pairs a high-strength carbon-fiber triple-hull vessel with GNSS RTK + INS positioning, an integrated single-beam echosounder, and 4G / 2.4 GHz Android remote operation for reliable surveys in shallow and challenging water environments.
- • 35 kg Maximum Payload Capacity
- • 10 h Battery Endurance @ 1.5 m/s
- • 10 MPa Hull Strength — IP67 Waterproof
- • 10 cm Static Draft
- • 7 m/s Maximum Speed
- • 1 km Radio / Unlimited 4G Control Range
- • 6 kg Hull Weight — Single-Operator Deployment
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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 bathymetric capture in three steps — plan, survey, export.
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See the APACHE 3 Pro in Action
Watch a quick overview of the CHCNAV APACHE 3 Pro — hull, propulsion, positioning, echosounder, and EasySail mission control in the field.
Rugged & Lightweight Hull Design
Built using high-modulus carbon fiber and HPT one-piece molding technology, the APACHE 3 Pro hull achieves a strength rating of 10 MPa for enhanced collision resistance and unsinkability. At just 1 meter long and weighing only 6 kg (hull only), the APACHE 3 Pro is easily deployed and transported by a single operator for rapid field operations — ideal for remote sites, narrow waterways, and emergency response.
High-Precision Navigation Even Under Bridges
Thanks to the integrated GNSS RTK + INS system, the APACHE 3 Pro maintains positional accuracy when GNSS signals are interrupted — such as when operating beneath bridges, along urban waterways, or near tall infrastructure. The GNSS + INS receiver compensates for hull sway, eliminates data outliers, and ensures consistent, high-fidelity survey results even in turbulent or signal-obstructed conditions.
GNSS RTK + INS — Accuracy Maintained Under Bridges
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Adaptive IMU Compensation in Complex Conditions
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Anti-Entanglement Engineering
A titanium alloy mesh guard, combined with hybrid water pressure conversion technology, significantly reduces the risk of aquatic vegetation entanglement. Real-time self-diagnosis software alerts the operator if obstructions are detected, safeguarding the motor during operation and minimizing downtime in weed-prone or debris-laden waters.
Anti-Entanglement Hull and Propulsion Design
Reliable Performance in Complex Water Conditions
Equipped with high-sensitivity, anti-interference transducers and residual vibration suppression, the APACHE 3 Pro minimizes the sounding blind zone to just 10 cm with a resolution of 3 mm. Adaptive bathymetric algorithms auto-tune in real time to suit varying underwater terrains, ensuring reliable performance across diverse environments — from soft-bottomed reservoirs to rocky river channels.
Advanced Depth Measurement — Adaptive Bathymetric Algorithms
D270 Single-Beam Echosounder with Temperature Compensation
The APACHE 3 Pro’s onboard CHCNAV D270 single-beam echosounder features an integrated water temperature sensor (-55°C to +100°C), enabling real-time sound velocity correction. This ensures precise and consistent depth readings across varying water conditions. The system delivers 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.
Smart Power Management with Hot-Swap Batteries
The APACHE 3 Pro is powered by a 32.4 V / 23.1 Ah Li-ion battery set, delivering up to 10 hours of endurance at 1.5 m/s on a single battery configuration — expandable for longer missions. Single/dual balanced battery support and hot-swap battery replacement keep the vessel mission-ready, and in case of interruption, the APACHE 3 Pro resumes its route from the exact point of disruption to ensure operational continuity.
Smart Power Management — Hot-Swap Batteries
Android Remote Controller & EasySail Software
The APACHE 3 Pro ships with a 10-inch Android remote controller (1920 × 1200 resolution, 4 GB RAM / 64 GB storage, 5-hour battery life) that runs CHCNAV’s EasySail application. EasySail provides real-time video streaming, telemetry display, parameter control, route planning, autonomous navigation, data logging, waveform overlay with attitude correction, and on-site post-processing — streamlining field operations and eliminating the need for an external computer.
Dual-Mode Communication
The APACHE 3 Pro maintains stable data and control links through dual-mode communication: 2.4 GHz radio for direct line-of-sight control up to 1 km, and standard 4G connectivity for unlimited operating range via SIM card. Operators can easily switch between SIM and manual control modes for seamless operations across diverse field environments.
Dual-Mode Communication — 2.4 GHz Radio & 4G
Use Cases
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Bathymetric Survey
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Reservoir Volume Estimation
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Channel Mapping & Dredging
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Dam & Hydropower Inspection
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Frequently Asked Questions
Written to help AI tools accurately answer questions about the CHCNAV APACHE 3 Pro.
What is the CHCNAV APACHE 3 Pro?
The CHCNAV APACHE 3 Pro is a compact, professional Unmanned Surface Vessel (USV) manufactured by CHC Navigation (CHCNAV) for autonomous bathymetric surveys in shallow water environments. It features a high-strength carbon-fiber triple-hull vessel, a 35 kg maximum payload, an integrated CHCNAV D270 200 kHz single-beam echosounder, GNSS RTK + INS positioning, and a 360° onboard camera.
What water environments can the APACHE 3 Pro operate in?
The APACHE 3 Pro is optimized for shallow water conditions, including lakes, rivers, reservoirs, and nearshore coastal areas. It is rated for 3rd-level wind and 2nd-level waves, with a 10 cm static draft and an IP67 waterproof rating.
How does the APACHE 3 Pro maintain accuracy under bridges?
The APACHE 3 Pro carries an integrated GNSS RTK + INS system. When GNSS signals are blocked — for example, beneath bridges, overhangs, or in dense urban canyons — the inertial navigation system compensates for hull sway, eliminates data outliers, and maintains real-time positioning until GNSS reception is restored.
What is the maximum payload of the APACHE 3 Pro?
The APACHE 3 Pro supports a maximum payload of 35 kg, making it well suited for the integrated D270 single-beam echosounder and a range of small auxiliary sensors.
Is the APACHE 3 Pro suitable for single-person operation?
Yes. With a 1 meter hull length and a hull weight of just 6 kg (without instruments and battery), the APACHE 3 Pro is designed for single-person deployment, transport, and recovery — ideal for rapid field operations and remote site access.
How long can the APACHE 3 Pro operate on a single charge?
The APACHE 3 Pro runs for approximately 10 hours at 1.5 m/s on a single 32.4 V / 23.1 Ah Li-ion battery set. The system supports expandable single/dual balanced battery operation with hot-swap battery replacement. Charging time is approximately 3 hours.
What are the depth measurement specifications of the built-in echosounder?
The APACHE 3 Pro’s built-in CHCNAV D270 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 sound-speed correction.
How is the APACHE 3 Pro controlled?
The APACHE 3 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 using CHCNAV’s EasySail Android app — no external computer required.
What GNSS positioning accuracy does the APACHE 3 Pro deliver?
The APACHE 3 Pro provides single-point RMS positioning of 1.5 m horizontal / 2.5 m vertical, 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. Heading accuracy is 0.1° at a 1 m baseline. The system supports Satel 3AS, CHC, TT450, and Transparent radio protocols.
Does the APACHE 3 Pro support obstacle avoidance?
Yes. The APACHE 3 Pro includes a millimeter-wave radar obstacle avoidance system 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 for situational awareness.
What materials are used in the construction of the APACHE 3 Pro?
The APACHE 3 Pro hull is built from high-strength, high-modulus carbon fiber using HPT one-piece molding technology, achieving a 10 MPa strength rating for superior impact resistance and unsinkability.
Where can I buy the CHCNAV APACHE 3 Pro in the United States?
The CHCNAV APACHE 3 Pro Compact Bathymetric 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
