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The DVL 75 is designed for low-cost, medium accuracy measurement of the velocity of an ROV. The system provides velocity outputs relative to the world frame of reference and can estimate positions using dead reckoning.

The Cerulean BlueOS extension does not currently support serial connections to the DVL-75. If you require "position hold" functionality, please select the DVL-75 with an ethernet connection.

Product Choices

Product ships in 2-3 weeks

HS Code: 9015.80

Max Depth: 300m

Ping freq.: 675kHz

Max Operating Height: 40m

Ping Repetition Rate: 5 - 20Hz


This system is designed and priced for use by people who need to know generally where their ROV is located or want to hold a position in the face of currents or tether pull.

A baseline system consists of an electronics stack and a sensor head containing piezoelectric elements and an inertial measurement unit (IMU). An upgraded IMU version of the head is also available, which has similar positioning performance but reduced calibration requirements.

The electronics can be packaged in the user’s existing or new enclosure, or an optional Cerulean DVL enclosure can be used.

An optional GPS sensor is available, which can be used to easily initialize an ROV’s position with respect to the standard latitude-longitude world coordinate system. If the optional GPS is not used, the user can provide initialization coordinates from their own GPS or other reference, or simply use the DVL’s dead reckoning outputs relative to an arbitrary coordinate system.

Download Resources

Software Release (2023-03-14)

DVL-75 User Manual

Cerulean Tracker User Manual

BlueOS Extension

CAD Models

Product Selector


Maximum Depth Rating, Sensor Head


Volume, Sensor Head


Mass, Sensor Head


Volume, Optional Enclosure


Mass, Electronics Stack


Mass, Optional Enclosure with Electronics Stack


Maximum Operating Height (Altitude)*


Minimum Operating Height


Maximum Operating Speed

4 m/s (8 knots)

Dead Reckoning Circular Error Probable (CEP)
(CEP = median expected error)

5% of distance traveled

Angular Operating Envelope, Degrees off vertical

0 to 20°

Ping Frequency


Ping Repetion Rate

5 -20Hz

V-in Power Min and Max

12V to 28V DC

V-in Power Average
(power averaged over 1 second)

12V to 24V DC, 8W average

V-in Current, Peak
(largest current spike during operation irrespective of voltage)


Serial Comms Voltage Levels

3.3V TTL or 5V TTL, auto sense

Serial Parameters, Default


Ethernet Support


*Achieved maximum height is dependent on several variables, including tilt of the sensor head, flatness of the bottom, hardness of the bottom, vegetation cover on the bottom, and salinity. On a hard-bottom body of water such as Lake Superior, we regularly achieve 40m+. On a muck-bottom lake such as Lake Minnetonka, we sometimes struggle to get 20m. Hard-packed sand bottoms tend to be somewhere in between those extremes.

DVL-75 Options

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What comes in the Box

DVL Most-In-One

Includes DVL Electronics and sensor head mounted on a 300m Electronics Enclosure

Adds 1x GPS Module Optional

DVL Most-In-One + IMU upgrade

Includes DVL Electronics and upgrade sensor head mounted on a 300m Electronics Enclosure

Adds 1x GPS Module Optional

DVL All-In-One

Includes DVL Electronics, upgrade sensor head and GPS mounted on a 300m Electronics Enclosure