Remote-controlled USV HydroBoat 990 USV

autonomousfor underwater topographic mappingmulti-sensor

Overview
The HydroBoat 990 is an Android-powered Unmanned Surface Vehicle (USV) designed for professional bathymetric surveys. It integrates GNSS/RTK positioning, a 200 kHz single-beam echo sounder and autonomous navigation into a compact, quickly deployable platform offering centimetre-level accuracy and safe, vessel-free depth mapping.

Key capabilities

• Centimetre-level real-time depth measurement (precision ±1 cm).
• Autonomous navigation from an Android handheld controller with mission planning and automated mission launch.
• Integrated 360° omnidirectional video for live monitoring.
• Waterjet brushless thrusters (no exposed propellers) to minimise fouling and maintenance.
• Operates using network RTK without a dedicated base station; supports extended communications via 4G for unlimited range.

Operational advantages

• Rapid setup: operational in under 5 minutes.
• Safe for operators: removes need for a manned vessel in survey areas.
• Robust hull and ingress protection: carbon-fibre double hull with IP67 rating for continuous operation in moderate wind and wave conditions.
• Automatic hovering (position hold), radar anti-collision and automatic reverse in shallow water for protection against grounding.

Hull and propulsion (table)
Dimensions (L × W × H): 1035 × 560 × 345 mm
Weight (excl. batteries): 20 kg
Material: Carbon fibre, rubber bumper
Weather resistance: Wind force 3 / Wave force 2
Waterproofing: IP67
Thrusters: 2 × brushless waterjet (no rudder)
Maximum speed: 6 m/s
Endurance (1 battery): 5 h at 1.5 m/s
Batteries included: 2 × 28.8 V / 34.3 Ah

Control system and communications (table)
Operating system: Android
Control software: SLHydro USV
Radio range: 1.3 km (2.4 GHz)
Extended range: Unlimited via 4G
Indicator light: Two-colour
Camera: 360° omnidirectional video
Anti-collision sensor: Detection 10–30 m

GNSS/RTK positioning (table)
Constellations: GPS, BDS, GLONASS, Galileo
RTK accuracy (H): ±8 mm + 1 ppm RMS
RTK accuracy (V): ±15 mm + 1 ppm RMS
Heading accuracy: 0.2° @ 1 m baseline
INS accuracy: 2.1°/h, < 1 m/20 s
Update rate: 200 Hz

Integrated single-beam echo sounder (table)
Frequency: 200 kHz
Depth range: 0.15 – 200 m
Accuracy: ±0.01 m + 0.1% × D
Beam angle: 5° ± 0.5°

Workflow and software
The SLHydro USV Android app handles the full handheld workflow including survey grid planning, mission management and live monitoring. SLHydro Sounder software (Windows) is used for data processing, tide correction, triangulation and export to standard formats (DXF, CSV, XYZ).

Standard package / Accessories

• HydroBoat 990 with integrated single-beam echo sounder
• 2.4 GHz antenna (RC-NJ-2425-417 mm)
• 4G antenna (LTE-NJ-0827-320 mm)
• UHF antenna (UHF-460-TNC-300 mm)
• Battery charger 100–240 V (European plug)
• 2 × Batteries 28.8 V / 34.3 Ah with transport case
• Android controller box with Type-C charger and shoulder strap
• 2 × Metal propeller protection grids (anti-vegetation)
• Tool kit (pliers, hex keys M1.5–M10, forceps)
• Hard-shell transport case (124 × 68 × 53 cm)
• SLHydro USV software pre-installed in Android controller
• SLHydro Sounder software for Windows (available for download)

Downloads
Technical datasheet available (product technical sheet).

caractéristiques / spécifications techniques

• Model: HydroBoat 990 USV
• Dimensions: 1035 × 560 × 345 mm
• Weight (excl. batteries): 20 kg
• Hull material: Carbon fibre with rubber bumper
• Ingress protection: IP67
• Propulsion: 2 × brushless waterjet thrusters (no rudder)
• Max speed: 6 m/s
• Endurance: 5 h at 1.5 m/s (per battery)
• Batteries: 2 × 28.8 V / 34.3 Ah
• Positioning: GNSS/RTK (GPS, BDS, GLONASS, Galileo), RTK H ±8 mm + 1 ppm, RTK V ±15 mm + 1 ppm
• Heading/INS: 0.2° heading accuracy @ 1 m baseline; INS 2.1°/h, <1 m/20 s; update rate 200 Hz
• Echo sounder: 200 kHz single-beam; depth 0.15–200 m; accuracy ±0.01 m + 0.1% × D; beam 5° ± 0.5°
• Communications: 2.4 GHz radio 1.3 km; extended via 4G
• Camera & sensors: 360° omnidirectional video; anti-collision sensor detection 10–30 m