SL40 | Unmanned Surface Vehicle丨OceanAlpha
SL40Y profile

Autonomous Survey Boat

Unique waterjet hydrographic surveying USV platform

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Rapid installation with ADCP and echosounder

Instruments, like ADCPs, ecosounders and side scan sonars, with diameter of 5 cm to 18 cm can be rapidly installed to the dedicated cabin on the USV.

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Automatic mission planning

  • User can pre-program the survey mission with the base station on the bank. The USV and instruments can conduct surveys autonomously and send back real-time data.
  • User can also drive the USV manually by a remote controller.
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Intelligent collision avoidance

  • With the ultrasonic sensors, the SL40 USV can detect and bypass obstacles 10 meters ahead to avoid collision.
  • In manual mode, user can observe water environment by the real-time video feed to better avoid obstacles.
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Higher speed & tangling free

The innovative waterjet propeller allows the SL40 USV to sail at 5m/s and effectively avoid being entangled by water plants or rubbishes.

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Stable sailing

The trimaran hull design highly improve the sailing stability in high speed.


Hull MaterialFiberglass composite with Kevlar&carbon fiber
Dimension(L)160 cm *(W)70 cm *(H)40 cm
Weight32 kg
Payload15 kg
Draft15 cm
PropulsionElectric water-jet propeller
Obstacle Avoidance50 m
Communication RangeAutopilot: 2 km    Remote Control: 1 km
Max. Speed 10 knots (5 m/s)
Battery Life4 hours @1.5 m/s


Application Case

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    USV Assist In Pollution Remediation of Yangtze River
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    USV Conducts Sewage Pipeline Detection and Water Quality Monitoring On A dangerous River Sector
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    SL40 USV Conducts Mutibeam Echosounder Survey With A R2Sonic 2020 MBES
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