Mission: Disrupt Sonar.

Sonar. For The Rest of Us.

Not everybody has the budget of the US Navy.

Advanced Technology

We leverage the latest advances in microelectronics, and digital signal processing to bring you new generation sonar products.

Sensibly Priced

We want to make sonar technology more accessible, and we know that not everyone has the budget of the US Navy and the Big Oil companies. That's why we do it.

We Love Ocean Exploration

We are passionate about making ocean exploration more accessible to anyone who shares that passion with us.

With its small size and low cost, the Surveyor 240-16 MBES is a perfect fit for deployment on the new generation of small Uncrewed Surface Vessels (USVs). Cerulean SonarView software supports live capture, real time preview, off line mission replay, and data export for post processing.

Omniscan is a low-cost, high-resolution, long-range imaging sonar ideally suited for use on small ROVs and surface vessels. As the ROV or surface vessel moves, SonarView “paints” the image of the scanned area of the sea floor giving excellent situational awareness in the murkiest conditions.

Omniscan 450 FS ideally suited for forward scanning applications.

Omniscan 450 SS tailored for side-scan applications.

Cerulean Partners

We are proud to be working with leading ROV manufacturers around the world to integrate cost effective Cerulean Sonar products enabling advanced underwater capabilities formerly reserved for the Navy and Big Oil.


Creators of the Chasing M2 Pro Max, an underwater ROV/Drone designed for professional users and industrial applications. It allows for omni-movement in all directions and has a powerful mount extension system, including an optional robot arm, to meet the needs of multi-professional scenarios.


SeaDrone provides drone-based end-to-end ship hull inspection solutions that enable operators to go beyond diver operations and perform class-certified underwater inspections in place of Dry Docking.

The SeaDrone system is designed for extreme expeditionary environments, and all sensors are tightly integrated into a purpose-built and consolidated mobile app designed to optimize the operator's workflow.

Notilo Plus

Notilo Plus uses the latest artificial intelligence, self-learning, and autonomous data collection and analysis to capture and utilize high added value images and data. This comprehensive ecosystem has proven its added value amongst industry and institutional actors in projects ranging from routine structural inspections, scientific research, offshore and underwater works to defense, research, and rescue.


Creators of a fish-inspired AUV designed to unobtrusively gather visual and environmental data and deliver in real-time.

Aquaai's AI & bio-inspired robotic fish can operate in many underwater environments, including; ports, pre-post flooding events, eco-friendly aquaculture monitoring, polluted freshwater river basins to open oceans, coral reefs, dams.  

Blue Robotics

The BlueROV2 is an affordable high-performance ROV. With a 6-thruster vectored configuration and plenty of expandability, it is a great ROV for inspections, research and adventuring. The BlueROV2's open-source electronics and software have made it a top choice among integrators and value-added resellers world wide.

More Products

ROV Locator Mk III

A system with no timebase drift allowing to remain submerged indefinitely without losing slant range accuracy. It requires no distance sync at the start of the mission or period crystal calibration procedures.

Tracker 650 DVL

Providing precise velocity and delta position data fundamental to effectively implementing advanced ROV stabilization features such as position hold and integrated position tracking.

ROV Locator MK II

Cost-effectiveness underwater positioning solutions to a new level. No need to calibrate crystal oscillators or manually sync the distance between units at mission start-up.


Simeon Pieterkosky CVO/Founder - Aquaai

Aquaai expectations in reliability, customer service, ease of installation, and cost-effectiveness attracted us to Cerulean Sonar, making it a perfect match for Aquaai and our new MAZU AUV line. Adding the Cerulean ROV Locator and their DVL-75 with GPS to our production line has been a great fit, and we look forward to working with the Cerulean team in all our future endeavors.


Peter Schubert Dir. Engineering - Poseidon Robotics

We use Cerulean DVL-75 and ROV Locator with our Remotely Operated Vehicles product line (Maui and Lanai). I value its simple installation, great performance, and QgroundControl integration where map position is updated without any input or configuration after being connected -- a great value to ROV users.


Ken deBoer CTO - Titan Maritime

The DVL-75 is my go-to positioning system. It requires little-to-no calibration and is amply accurate to find targets of known GPS coordinates. It is fantastic to place a waypoint on the screen and piloting straight to it while seeing the ROV location/track on the screen when navigating!


Pierre Budan, Chief Technical Officer - Notilo Plus

The DVL-75 and ROV Locator enable our ROV Seasam to perform complex autonomous operations in a cost-efficient manner. Our team is looking forward to scaling Cerulean's solution up to sustain a blue economy.



I'm convinced the DVL-75 and ROV Locator combination is the best combo for a small ROV. Our clients who have used the equipment in the past are delighted with the results. Here in Seadronics, we are happy with the reasonable cost, superior performance, and continuous improvement of equipment by Cerulean Sonar.


Jeff Conger Founder - BlueLink

It is great to see companies like Cerulean Sonar pushing the limits to make sonar technology solutions available at reasonable prices. Cerulean is opening the doors to countless underwater projects, research, and exploration that otherwise would probably not happen.

Oceanology International London Excel 2024.