What is a DVL?

The DVL-A50 is – by far – the world’s smallest commercially available Doppler Velocity Log.The record breaking 5 cm min altitude makes the A50 extremely useful for working with tools close to the seabed.

With its unbeatable price/performance, the DVL-A50 is now establishing a new market standard.

Finally a DVL suitable for small ROVs/AUVs!

The DVL is designed with small ROVs/AUVs in mind where it can be mounted without adding significant weight or drag to the vehicle.

While the A50 is the perfect fit for small vehicles looking for professional navigation features, the combination of low cost and high performance is also making it very attractive for much larger vehicles.

Advantages of using DVL on your vehicle
  • Accurate position hold for professional inspections and/or tooling interventions
  • Accurate micro movements like “move 1 inch to the right”
  • Travel over great distance and use “dead reckoning” to create the travelled path
  • Find home even while being out of reach of acoustic positioning systems like Underwater GPS
  • Accurate flight path which pairs very well with sonar imagery

Combine the DVL with the Waterlinked Underwater GPS system to get a high performance, professional navigation package!

Device diameter : 66 mm
Device height : 25 mm
Device weight (air) : 250 grams
Device weight (submerged) : 185 grams
Depth rating : 1000 meters
Materials : Stainless steel 316 (housing)
: PEEK (transducer caps)
Operating temperature : -5 to 60 °C
Input voltage : 10-30 V
Power consumption : 0.25 A at 12V
Power-on current surge : 1.25 A at 12V
Physical interface : 8 wires (pwr/serial/Ethernet)
: 3 meter cable with interface module
Indicator : Status LED (Power, Lock)
Communication : UART 115200 baud serial 3,3V
: Ethernet
Protocols : Water Linked API
: PD0 (subset)
Transducer frequency : 1 MHz
Transducer setup : 4-beam convex Janus array
Transducer beam angle : 22.5 degrees
Ping rate : 4-26 Hz (adaptive to altitude)
Sensor assist : Integrated AHRS/IMU (Yost Labs TSS-NANO)
Min altitude : 5 cm
Max altitude : 50 meters
(Performance at altitudes > 35 meter is dependent
on seabed conditions, salinity levels etc.)
Max velocity : 2.6 m/s
Velocity resolution : 0.1 mm/s
Long term accuracy : ±1.01 % (Standard version)
: ±0.1 % (Performance version)
CE : Yes
Downloads / Resources
User manual  
3D STP file (dvl)  
3D STP file (bracket)  
Protocol documentation  
CE certificate  
Certificate of origin  
Export license declaration  


Further reading

Contact SOSub for further details and a quote.