CHCNAV APACHE 4 USV is an unmanned surface vehicle (USV) designed for hydrological and bathymetric surveys, optimized for measuring water velocity and discharge. The platform supports a wide range of ADCP systems and compact echo sounders, providing a flexible solution for hydrological measurements in rivers, ports, and other water bodies.
Weighing only 13 kg, with a 12 cm draft, integrated GNSS + IMU positioning, and autonomous navigation, APACHE 4 can be efficiently transported and operated by a single person.
| Specifications | |
|---|---|
| Hull and Dimensions | |
| Hull dimensions (L × W × H) | 1280 × 720 × 420 mm |
| Weight (without battery and antenna) | 30 kg |
| Draft (unladen) | 8.6 cm |
| Construction | Carbon fiber, detachable triple-hull design (M-type); removable land-assist transport wheels |
| Maximum payload | 40 kg |
| Propulsion, Speed and Endurance | |
| Motor | Brushless DC, 1000 W, 7200 ± 5% RPM; 240 mm propeller |
| Maximum speed | 6.5 m/s |
| Endurance | 10 h at 1.5 m/s (one battery set; expandable) |
| Battery | |
| Type and capacity | Li-ion, 32.4 V / 23.1 Ah; single or dual batteries, hot-swap |
| Charging time | 3 h |
| Positioning and Navigation | |
| GNSS | Internal dual-antenna; BDS, GPS, Galileo, GLONASS, QZSS |
| Heading accuracy | 0.1° at 1 m baseline |
| IMU | Update rate 200 Hz |
| Obstacle avoidance | 0.2–40 m; field of view 112° horizontal, 14° vertical |
| Communication and Control | |
| Remote controller | Range 1.5 km (2.4 GHz radio); unlimited via 4G Android, 10" display, 1920 × 1200, 4 GB RAM, 64 GB storage, 5 h endurance |
| Interfaces | 2 × RJ45, 2 × RS232, USB, Type-C, nano SIM, TF card (up to 128 GB) |
| Software | EasySail (Android) |
| Protection and Operating Limits | |
| Ingress protection | IP67 |
| Wind and wave limits | Wind level 3, wave level 2 |