Subsea Robotics & Metrology
Turnkey inspections utilizing advanced ROVs, hovering micro-AUVs, and subsea magnetic crawlers. Millimetric data mapping with absolute physical accuracy.
Assets
SAAB Seaeye Lynx ROV
Our heaviest inspection-class Remotely Operated Vehicle, engineered for deep water, high-current environments, and structural subsea metrology.
Depth / Range Rating
Operational depth rating of 1,000 metres
Dry Weight
200kg (in air)
Class
IACS Class-Approved Subsea Robotics
Build Class
SAAB Seaeye Systems Build
Hydrus AUV
Advanced micro-hovering Autonomous Underwater Vehicle engineered for high-resolution seafloor mapping, benthic biological surveys, and pipeline inspections.
Depth / Range Rating
Operational depth rating of 300 metres
Dry Weight
7.1kg
Class
Subsea Robotics / Fully Autonomous AUV
Build Class
Advanced Navigation Array
Deep Trekker DT640 MAG
Submersible magnetic utility crawler designed to crawl along steel hulls, pipelines, and tanks, delivering high-resolution visual and NDT thickness audits.
Depth / Range Rating
Operational depth rating of 50 metres
Dry Weight
16.6kg (in air)
Class
Subsea Magnetic Utility Robotics
Build Class
Deep Trekker Robotics Canada
Subsonus USBL/INS & Tag Transponder
Compact, self-contained subsea acoustic positioning transceiver combining advanced acoustic beamforming with Inertial Navigation Systems.
Depth / Range Rating
Transceiver: 995 metres
Tag: 2000 metres depth rating
Dry Weight
Transceiver: 1170g in air (650g in water)
Tag: 28 WHr lithium-ion
Class
Subsea Acoustic Navigation & Telemetry
Build Class
Advanced Navigation Array
Advanced Robotics & Subsea Metrology
Delivering high-resolution subsea dimensional telemetry through a synchronized network of observation-class ROVs, micro-hovering AUVs, and acoustic USBL transponders.
High-Speed Fiber-Optic Telemetry
Our SAAB Seaeye Lynx ROV utilizes advanced fiber-optic multiplexers to transmit live multi-channel HD video streams and sensor data back to the surface with zero signal latency.
Acoustic USBL Triangulation
Tetherless autonomous units like the Hydrus AUV utilize Subsonus USBL transceivers to resolve 3D position coordinates under the water, mapping structural digital twins to high precision.
Non-Destructive Ultrasonic Thickness (UT)
Our DT640 magnetic crawler carries specialized Cygnus multi-echo thickness gauges, measuring regional parent metal loss through protective epoxies and macrofouling layer arrays.
Frequently Asked Questions
Technical insights regarding our subsea robotics, acoustic positioning, and diagnostic systems.
How does the SAAB Seaeye Lynx ROV handle deep-water inspections under high current conditions?
The SAAB Seaeye Lynx ROV is equipped with six high-voltage thrusters (four horizontal and two vertical) providing 66 kgf of forward thrust. This allows it to hold its position and navigate efficiently in currents up to 3 knots. Guided by our subsea technicians, the fiber-optic telemetry system provides real-time control and multiple live HD video feeds to monitor structural integrity with zero latency.
What are the advantages of using the Hydrus AUV for benthic surveys and seafloor asset mapping?
The Hydrus AUV is a fully autonomous, micro-hovering vehicle that doesn’t require a physical tether. It uses an on-board Inertial Navigation System (INS) and Doppler Velocity Log (DVL) sonar to execute pre-programmed survey paths with high-precision station keeping. This makes it ideal for non-destructive benthic monitoring, pipeline sweeps, and high-density 3D photogrammetry of historic sites without any risk of tether entanglement.
How does the Deep Trekker DT640 MAG crawler perform metal thickness measurements through marine growth?
The DT640 MAG utility crawler uses patented rare-earth magnetic wheels to clamp onto vertical or inverted ferrous steel surfaces. It can be fitted with an integrated Cygnus ultrasonic thickness testing (UTT) probe. This probe uses multi-echo technology to send ultrasonic waves through marine coatings and rust, measuring the thickness of the parent metal beneath without requiring aggressive cleaning of the structure.
How does the Subsonus USBL/INS positioning system achieve centimeter-level accuracy?
The Subsonus transceiver combines an 8-hydrophone acoustic array with an advanced Inertial Navigation System (INS) and a sensor fusion algorithm. By measuring the phase differences of sound waves returning from subsea transponders (like the Subsonus Tag), it continuously updates the 3D coordinates, orientation, and velocity of our ROVs and divers, providing millimetric tracking resolution at close ranges.
Can Commercial Marine Group's robotic assets be deployed rapidly to remote locations?
Yes. Our robotic platforms are designed with portability as a core priority. The Hydrus AUV weighs only 7.1 kg and is hand-deployable, while the DT640 crawler and Subsonus acoustic kits are lightweight and housed in compact, rugged transport cases. This enables our teams to deploy them rapidly on commercial flights or support vessels to any site across Australia and internationally.