## Spotter Scout Technical Specs

Complete technical specifications for Spotter Scout, an uncrewed surface vehicle developed in partnership with Online Oceans. Review vessel, power, sensing, navigation, and maintenance specs.

[Explore Configuration](https://spotter-configurator.sofarocean.com/)

## Technical Specifications

[Download the Spec Sheet](https://5311899.fs1.hubspotusercontent-na1.net/hubfs/5311899/Spec%20Sheets/Spotter_USV_Spec_Sheet_20260126.pdf)

### VESSEL

- **Length**: 2.5 m  
- **Beam**: 0.8 m  
- **Draft**: 0.6 m  
- **Weight**: ~80 kg  
- **Cruise Speed**: 3 knots  
- **Endurance**: 6+ months  
- **Battery-Only Range**: 200 nm  
- **Hull Construction**: Rotomolded plastic

### POWER

- **Solar Array**: 340 W  
- **Battery Capacity**: 2 kWh lithium-ion  
- **Battery Certification**: UN 38.3  
- **Battery Location**: Keel-mounted, fully submerged

### SURVIVABILITY

- **Operational Sea State**: Sea State 7–8  
- **Survivable Sea State**: Sea State 9  
- **Self-Righting**: Yes (1–2° inverted stability angle)  
- **Moving Parts**: 2 (thruster + rudder servo)  
- **Hull Type**: Flooded (no sealed air volume)

### NAVIGATION & CONTROL

- **Station Keeping Radius**: 50 m – 10+ km (configurable)  
- **Waypoint Navigation**: Multi-point with configurable loiter times  
- **Collision Avoidance**: AIS-based, configurable radius  
- **Fleet Capacity**: 50+ units per operator  
- **Command & Control**: Browser-based (desktop and mobile)

### SENSING

- **Wave Frequency Range**: 0.03 – 0.8 Hz (30s – 1.25s)  
- **Wave Direction Range**: 0 – 360°  
- **Wave Displacement Accuracy**: Approximately ± 2cm  
- **Sampling Rate**: 2.5 Hz  
- **Wind**: Speed and direction (derived)  
- **Barometer Accuracy**: ±0.5 mbar at 25°C  
- **Barometer Range**: 700 – 1100 mbar  
- **Camera**: HD 1080p, time-lapse and live stream via Starlink

### PAYLOAD

- **Payload Capacity**: 30 kg / 300L  
- **Payload Voltage**: 5 - 24 V  
- **Payload Mounting**: Surface, subsurface, or towed  
- **Subsurface Depth**: ~1 m (keel-mounted)  
- **Bristlemouth**: 1 compatible payload per vehicle

### COMMUNICATIONS

- **Primary Telemetry**: Iridium (configurable intervals)  
- **High-Bandwidth**: Starlink (on demand)  
- **Backup**: Spotter Iridium SBD (independent)  
- **AIS**: Receiver standard; Class B transceiver optional

### MAINTENANCE

- **Service Interval**: 6 months  
- **Service Items**: Thruster bearings, rudder servo, antifoul  
- **Battery Lifespan**: ~2 years (condition-monitored)  
- **Shipping**: Sea freight (UN 38.3 lithium battery)

## More resources

[**Blog Post**  
  
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[**Validation**  
  
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