Flow Series

Controlled positioning for low-flow work.

Flow Scout is an autonomous surface vehicle (ASV), also known as an uncrewed surface vessel or USV. It is a compact, high-precision platform with dedicated lateral movement for shallow channels, slow-moving water and demanding positioning tasks.

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Flow Scout viewed from the front-left in its compact survey configuration — Compact low-flow platformFlow Scout

Front view of the Flow Scout with configured deck hardware — Compact low-flow platformFlow Scout

Minimum operating depth: 0.14 m
Hull dimensions (L × W × H): 1.35 × 0.7 × 0.1 m
Weight, no batteries: 11 kg
Top speed: 2 m/s (3.9 kn)

01Dedicated lateral movement
02Compact field deployment
03Built for low-flow measurement

Mission fit

Designed for shallow, slow-moving water.

Flow Scout is designed for missions where controlled positioning and repeatable movement are essential, from irrigation channels to slow and shallow river sections.

Low-flow measurement
Shallow water
Lateral control

Construction and configuration

Beyond the overview.

Alternate configuration, deck-mounted hardware and transport views show how the compact platform is prepared for field work.

Flow Scout viewed from the opposite front quarter with its deck-mounted instrument hardware visible

Flow Scout with its control enclosure open, showing the battery compartment and instrument mount

Lateral movement

Lateral movement for controlled positioning.

Dedicated lateral movement helps the vessel adjust its position in low-flow environments without relying only on forward motion.

Field workflow

A compact path from setup to measurement.

Prepare the instrument, configure the mission and operate from shore.

01
Assemble the vessel for the field conditions.
02
Install the selected sensor, mount and cable.
03
Connect the controller and configure the mission.
04
Launch, position and monitor the measurement from shore.

Platform architecture

Compact platform with dedicated lateral control.

Flow Scout combines the following hardware and operating capabilities.

Inflatable PVC drop-stitch hull
T300 brushless thrusters
Dedicated lateral movement
GNSS antennas and front camera with LEDs
Universal sensor mount and Multiport interface
Surfbee transmitter, App and Heading Lock

Sensor integration

Sensor compatibility

SonTek M9, SonTek RS5, YSI EXO, and more on request

Explore accessories

Published specifications

Dimensions and performance.

Hull height refers to drop-stitch thickness, excluding the mast and fitted sensor. All four models use the same transport bag.

Hull dimensions (L × W × H): 1.35 × 0.7 × 0.1 m
Transport bag (L × W × H): 90 × 45 × 50 cm
Weight, no batteries: 11 kg
Minimum operating depth: 0.14 m
Maximum payload: up to 8 kg
Top speed: 2 m/s (3.9 kn)
Operating temperature: -10 °C to +45 °C
Hull: Inflatable PVC drop-stitch
Thrusters: 3 × T300 including rear centre
Positioning: Dual GNSS with heading, standard
Dedicated lateral movement: Yes
Sensor compatibility: SonTek M9, SonTek RS5, YSI EXO, and more on request

Figures describe the standard product. Speed, payload and operating depth vary with the instrument fitted and the conditions on the day.

Compare the range

See how the other models differ.

Compare the mission and instrument workflow, then confirm the model, mount, cable and accessory configuration with Surfbee.

Versatile survey platform

Flow Seeker

Best suited to teams working across several survey workflows.

Ultra-compact platform

Flow Finder

Best suited to fieldwork centred on the SonTek RS5.

Multi-payload platform

Flow Duet

Best suited to multi-payload and profiling requirements.

Compare all four models

Technical consultation

Planning a low-flow measurement mission?

Tell us about the channel, flow conditions and instrument you use. We’ll help review the right configuration.

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