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Oceanalpha • SURF20 ASV

Vehicle Class
Hydrographic Survey ASV
Equipment Snapshot
Vehicle Name
Vehicle Type
Autonomous Surface Vehicle (ASV)
Vehicle Class
Hydrographic Survey ASV
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Oceanalpha SURF20 Hydrographic ASV is designed for water discharge measurement and hydrographic surveys. The SURF20 ASV is compatible with different brands of singlebeam sonars (SBES) and acoustic doppler current profilers (ADCP), including Teledyne RD Instruments' Workhorse Rio Grande, RDI, SonTek's RiverSurveyor S5/M9 ADCP, and LinkQuest's FlowQuest ADCP.

The SURF20 ASV weighs only 13kg weight which makes it maneuverable, compact, and easily handled and operated by one person. It is also small enough in size that it can easily fit in the back of an SUV or trunk of a sedan. Capable of reaching a maximum speed of 5.5 m/s (10.7 knots), and observable within a 2km communication control range, the SURF20 ASV is suitable for most water current environment.

SURF20 ASV is specially designed for hydrographic surveying and bathymetric measurement. Its optimised unmanned vessel style reduces the impact of water current on voyage and noise on the measuring instruments to the maximum extent.

SURF20 ASV is made of carbon fibre and fibre glass with anti-corrosion, anti-wave, low temperature resistance properties, and is mounted with two propellers to avoid aquatic plants and garbage twining.
1.25 m
0.46 m
0.3 m
0.25 m
13 kg
Payload (Max)
5 kg
10.7 knots
Indicative survey speed
Typically 2 hours
Standard Payload
Acoustic Doppler Current Profiling (ADCP)
Optional Payload
Acoustic Doppler Current Profiling (ADCP)
These payloads can be integrated upon request
Control & Communications
2km remote control range
5km data telemetry range
Autonomous Control ● Remote Control ● Semi-Autonomous Control
Materials & Construction
Fibreglass composite with Kevlar and carbon fibre
Launch & Recovery
Davit ● Manual Handling
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