Hydromea EXRAY™ 200 m · 9 kg · 13.4 cm Tall
EXRAY - studio render
At just 9 kg and 13.4 cm tall, EXRAY is the world's most capable compact inspection ROV. Six degrees of freedom, 4 to 6 hours of endurance, FHD video with 4K stills, modular sensor payloads and an optional wireless FLYOUT that works up to 30 m beyond the tether over a LUMA optical link - all DNV class approved.
✓SepcoTech is an authorised Hydromea distributor
Small enough for the hatch. Complete enough for the job.
At 9 kg and 13.4 cm tall, EXRAY goes where conventional ROVs cannot fit. Each wing carries its own thrusters and light for full six-axis control, the camera sits dead centre, and an optional LUMA upgrade lets it relay a wireless FLYOUT up to 30 m beyond the tether.
- 01Thrusters6-DOF · up to 2 knFour thrusters per wing give surge, sway, heave, roll, pitch and yaw for exact station-keeping.
- 02Hull9 kg · 13.4 cm tallSlips through hatches, manways and pipe bores. One person carries it to the water.
- 03CameraFHD video · 4K stillsUndistorted Full HD live video, 4K stills and geo-tagged points of interest.
- 04LUMA nodeOptionFLYOUT relay linkOptional upgrade that makes the tethered EXRAY the relay for a wireless FLYOUT working up to 30 m beyond the tether.
- 05Lighting1 light per wingA failed thruster or light means a whole-wing swap, so a spare wing keeps EXRAY diving the same day.
The inspections that used to mean dewatering or divers
Tanks, penstocks, ballast voids and confined wet spaces are exactly where conventional inspection is slowest, costliest and most dangerous. EXRAY was engineered to remove those limits.
Too Tight to Enter
Standard ROVs are too large for hatches, pipes and penstocks - leaving dewatering or confined-space diving as the only option.
Diver Risk & Cost
Confined-space and contaminated-water dives carry real risk and heavy mobilisation cost. EXRAY keeps people out of the water.
Tether Snag
Cables catch on internal structure, valves and machinery. EXRAY can run fully wireless via the LUMA optical modem.
Slow to Deploy
Crane lifts and support vessels eat time. At 9 kg, one operator carries EXRAY to the water's edge and dives in minutes.
Built for Where Others Can't Go
EXRAY's ultra-compact form factor and six-degree-of-freedom control unlock inspection scenarios that were previously impossible - or that demanded a costly dive team.
Fits where nothing else does
At 13.4 cm (5.3 in) tall and 9 kg, EXRAY's slim profile slips through access hatches and confined spaces that rule out every conventional ROV. Tanks, pipes, penstocks and ballast voids all become accessible - carried to the water by one person and deployed in minutes.
- Access hatches, manways and pipe bores closed to standard ROVs
- Single-operator deployment from any quay, jetty or vessel edge
- Replaces confined-space diver entry on many inspection tasks
Precise in current. Long on the job.
Full six-axis control - surge, sway, heave, roll, pitch and yaw - gives pilots exact station-keeping for close-up inspection, even in flow and confined spaces. Swappable batteries deliver 4 to 6 hours of dive time, and each recharges to 80% in about an hour, so EXRAY runs multiple missions a day.
- Stable hover for welds, corrosion and coating close-ups
- FHD live video with 4K still capture and geo-tagged points of interest
- Modular payload bay with NAVIA™ auto-detection of attached sensors
FHD Video · 4K Stills
Crystal-clear undistorted Full HD live video with 4K still capture. Geo-tagged points of interest feed straight into structured reports.
Modular Payloads
Industry-standard payload connectors with NAVIA™ auto-detection - water quality, sonar, thermal and structural sensors plug straight in.
Optional Wireless Flyout
Add the EXRAY FLYOUT, a second robot that detaches from the tethered EXRAY and flies up to 30 m beyond it over a LUMA optical link - no cable to snag in cluttered spaces.
IMU & Depth Sensing
Onboard inertial measurement, pressure and temperature sensing keep orientation, depth and vehicle health on the pilot screen.
PILOT & INSPECTOR Stations
Choose the 8 kg PILOT control station or the 7 kg INSPECTOR station - both run the same NAVIA™ interface.
DNV Class Approved
EXRAY is DNV class approved - ready for class-recognised inspection work in regulated maritime and energy environments.
Automated Payload Detection. Instant Reports.
The NAVIA™ control software detects and configures any attached sensor the moment it connects, overlays live data on the video feed, and turns geo-tagged findings into inspection reports at the press of a button.
One interface from plan to report
Set up a dive, manage multiple EXRAY units, monitor battery and telemetry, then capture geo-tagged points of interest as you fly. Sonar and camera views sit side by side, and structured reports with annotated imagery are generated on completion - no separate post-processing suite required.
- Automatic payload detection & configuration on connection
- Live camera and sonar views on a single screen
- Geo-tagged Points of Interest captured during the dive
- One-press structured inspection report generation
- Multi-vehicle fleet view with live battery & status
Cut the cord at the target. Add a wireless FLYOUT.
EXRAY is a tethered ROV that can be extended with the EXRAY FLYOUT: a second, wireless robot that docks with the tethered EXRAY, travels down with it and detaches at the target. The tethered EXRAY holds station and relays the link over LUMA optical light, so the FLYOUT can work up to 30 m (100 ft) beyond the end of the tether - ideal for multi-chamber tanks, piping and cluttered spaces where a cable creates real entanglement risk. The operator experience is unchanged: same NAVIA™ interface, now over light.
- The FLYOUT carries no tether, so there is nothing to drag or snag at the target
- Full FHD video streaming over the wireless optical link
- Up to 30 m (100 ft) beyond the tethered EXRAY · full 6-DOF control retained
- Needs the LUMA upgrade on the tethered EXRAY and a DVL
Full EXRAY Specifications
Complete technical data for the EXRAY inspection ROV. Contact us for mission-specific configuration advice.
Physical & Performance ▾
| Vehicle Weight | 9 kg (20 lbs) |
| Dimensions (L × W × H) | 600 × 378 × 134 mm |
| Depth Rating | 200 m |
| Degrees of Freedom | 6-DOF |
| Max Speed | Up to 2 knots (1 m/s) |
| Operating Temperature | 0 – 40°C (32 – 104°F) |
Power & Endurance ▾
| Battery Endurance | 4 – 6 hours |
| Charge Time | About 1 hour (0 to 80%) |
Tether & Communication ▾
| Standard Tether | 100 m twisted copper pair, 4 mm diameter |
| Extended Tether | Up to 300 m (optional) |
| Wireless Option | EXRAY FLYOUT (optional): up to 30 m beyond the tether over a LUMA optical link |
Imaging System ▾
| Video | Full HD (FHD) - undistorted |
| Still Images | 4K resolution |
| Data Management | Geo-tagged POIs, instant report generation |
Sensors & Navigation ▾
| IMU | Inertial Measurement Unit - orientation & rotation tracking |
| Depth Sensor | Internal pressure sensor |
| Temperature Sensor | Internal vehicle temperature monitoring |
| Payload Interface | Industry-standard connectors, NAVIA™ auto-detection |
Control Stations ▾
| PILOT Station | 8 kg (18 lbs) |
| INSPECTOR Station | 7 kg (15 lbs) |
| Interface | NAVIA™ UI - auto payload detection & data display |
Certifications ▾
| Classification | DNV class approved |
Three Ways to Buy EXRAY
Every EXRAY package ships as a complete, ready-to-dive system - robot, control station, tether, 4K camera, batteries, transport case, NAVIA™ software and introductory training. The tiers differ in how much spare capacity, support and cover you start with.
EXRAY™ Explorer
A fast start at the lowest entry cost - the complete EXRAY system with everything needed to run standard inspection missions.
- EXRAY™ robot, standard control unit and control interface
- 100 m tether / comms link and 4K premium camera package
- Battery kit (3 batteries) and charger / power supply unit
- Transport case and basic maintenance toolkit
- NAVIA™ software included, with 1 year of software & firmware upgrades
- Introductory training for up to 2 people
- 12-month standard warranty
Spare wings, an INSPECTOR STATION, extra tether, sensor payloads and a Care Package can all be added - the Care Package must be taken with the package itself.
EXRAY™ Professional
The best balance of readiness and value - doubled power, a spare wing on the shelf and damage cover from day one, for teams that dive regularly.
- Everything in Explorer, plus:
- 2 × battery kits and 2 × chargers for back-to-back dives
- 1 spare wing held on the shelf
- INSPECTOR STATION for a second observer or class surveyor
- 100 m of additional tether length
- Care Package for the first 12 months
- Priority support
- 2 years of software & firmware upgrades
Extended warranty to 24 months can be added at the point of purchase.
EXRAY™ Enterprise
The highest uptime and the fullest capability bundle - full spares cover, the longest tether reach, two years of Care Package and warranty out to 24 months.
- Everything in Professional, plus:
- 3 × battery kits and 3 × chargers
- 2 spare wings and a complete wet skin with 16 thruster ducts
- 200 m of additional tether length
- Care Package for the initial 24 months
- Extended warranty - 24 months total
- 3 years of software & firmware upgrades
- Co-branding for 2 years
The natural choice where downtime is expensive and the robot is in the water most weeks.
What's in Each Package
| What's in the box | Explorer | Professional | Enterprise |
|---|---|---|---|
| Core system | |||
| EXRAY™ robot | 1 | 1 | 1 |
| Standard control unit / control interface | 1 | 1 | 1 |
| Tether / comms link (100 m) | 1 | 1 | 1 |
| 4K premium camera package | 1 | 1 | 1 |
| Transport case | 1 | 1 | 1 |
| Basic maintenance toolkit | 1 | 1 | 1 |
| INSPECTOR STATION | - | 1 | 1 |
| Additional tether length | - | +100 m | +200 m |
| Power & spares | |||
| Battery kit (3 batteries) | 1 | 2 | 3 |
| Charger / power supply units | 1 | 2 | 3 |
| Spare wings | - | 1 | 2 |
| Wet skin with 16 thruster ducts | - | - | 1 |
| Software | |||
| NAVIA™ software | Included | Included | Included |
| Software & firmware upgrades | 1 year | 2 years | 3 years |
| Support, warranty & training | |||
| Standard warranty (12 months) | ✓ | ✓ | ✓ |
| Extended warranty (24 months) | - | - | ✓ |
| Introductory training (up to 2 people) | ✓ | ✓ | ✓ |
| Priority support | - | ✓ | ✓ |
| Care Package | - | 1 year | 2 years |
| Co-branding | - | - | 2 years |
Scroll the table sideways on a narrow screen. Every package can be extended with the add-ons below - ask us for a configured quote.
Build the EXRAY You Actually Need
EXRAY is modular by design. Every payload below is fully integrated into the NAVIA™ interface - no external topside box, no second screen. Add any of them to a package now, or retrofit later.
Vehicle & Wireless Options
Extend the reach of the system itself
EXRAY™ FLYOUT - Second Wireless Robot
HydromeaA second, zero-latency wireless EXRAY that docks with the tethered robot and travels with it as one unit. Once the pilot reaches the target, the FLYOUT detaches and flies on under wireless control with real-time HD video - as if it were still tethered - over Hydromea's LUMA™ dispersed-light optical link for omnidirectional connectivity.
Requires the LUMA™ wireless upgrade on the tethered robot, and a DVLWireless LUMA™ Upgrade
Hydromea · per robotAdds the LUMA™ nodes that let a tethered EXRAY act as the wireless relay for a FLYOUT. The upgrade can be applied at any time and is performed remotely - no return to Switzerland.
INSPECTOR STATION
Hydromea · 7 kgAn optional extension of the PILOT STATION for missions overseen by a second person - a class surveyor, client representative or supervising engineer - giving them real-time monitoring of the dive on their own screen.
Gripper
Blue Robotics NewtonLets EXRAY interact with its environment rather than only look at it: retrieve dropped objects, attach a recovery line, or free a snagged tether. Fully integrated in NAVIA™ with no external system.
Spare Wing
Hydromea · 4 thrusters + 1 lightEach wing carries four thrusters and one light. If a single thruster or light fails, individual parts are not replaceable - the complete wing is swapped, so a spare wing on the shelf is what keeps a damaged EXRAY diving the same day.
Wet Hull - Skins & Thruster Ducts
HydromeaReplacement yellow skins and thruster ducts, the parts that take the everyday knocks. One EXRAY uses two skins, and a complete wing takes eight ducts.
Battery Pack (3 × 98 Wh)
HydromeaAn additional set of three 98 Wh packs. Extra sets plus chargers are what turn a single-dive day into continuous operation - swap and keep diving while the last set recharges (about 1 hour to 80%).
Battery Charger
HydromeaAdditional charger / power supply unit, so a full battery set can charge while another is in the water.
Tether Spool with 100 m Tether
HydromeaA complete second spool with 100 m of tether - for a spare, a second deployment point, or a rapid swap after damage on site.
Additional Tether - 50 m Increments
Hydromea · up to 300 mExtend diving range beyond the standard spool length in 50 m steps, up to a 300 m maximum. The increments are specified so operators reach deeper or further without adding heavy drag or pulling the robot down in flight.
Transport Pelicase
HydromeaAn additional protective transport case - for splitting the system across vehicles, or shipping payloads separately from the robot.
Custom Payloads
Hydromea engineeringHydromea continually adds new payloads driven by customer projects. If your inspection needs a sensor that is not on this list, tell us what you need to measure and we will take it to the Swiss engineering team.
Advanced Sensor Payloads
All auto-detected and displayed inside NAVIA™
DVL - Doppler Velocity Log
Water Linked A50Measures velocity relative to the seabed by emitting acoustic waves from four angled transducers and reading the Doppler shift of the returning echoes. It transforms pilot workload in adverse and confined environments, holding stability and control where visual reference is poor. Fully integrated into NAVIA™ with no external system.
Mandatory when the wireless FLYOUT is usedUT Thickness Sensor
Cygnus Instruments · single crystal (S2C)Single-crystal ultrasonic probes for wall-thickness readings. In Echo-Echo mode they read straight through and ignore up to 1 mm (0.040 in) of surface coating; in Single-Echo mode they measure bare metal. Probe frequency 2–5 MHz, sensor weight 1,001 g (35.31 oz), fully integrated in the NAVIA™ interface.
Scanning Imaging Sonar
Blue Robotics Ping360A mechanical scanning sonar that gives EXRAY a top-down view of its surroundings, using a rotating acoustic transducer to build detailed circular images. NAVIA™ handles rotation and position compensation, turning the scan into interactive geospatial situational awareness.
Multibeam Sonar - Oculus M750D
Blueprint SubseaA comprehensive view of surrounding structures, objects and the seabed - the navigational aid that keeps EXRAY working in zero visibility. Rapid image updates make targets identifiable and deliver precise dimensional data on structures. Fully integrated in NAVIA™.
Multibeam Sonar - Oculus M3000D
Blueprint Subsea · higher frequencyThe higher-frequency multibeam option, for finer detail and tighter dimensional measurement on close-range inspection targets. Same single-interface integration in NAVIA™.
Software & Upgrades
NAVIA™ ships with every package
NAVIA™ Software
Included in all packagesThe single platform pilots work from: live video, sonar and sensor streams, measurement capture, media recording, the link to an INSPECTOR STATION, plus configuration, diagnostics and issue reporting back to Hydromea.
Premium Upgrade Package
Annual subscriptionGeneral software updates - bug fixes and critical functions - are issued at no cost to every owner. The Premium Upgrade Package is what unlocks the optional feature and performance upgrades to EXRAY™ and NAVIA™ as the engineering team releases them. Included for the initial period set by your package tier (1, 2 or 3 years), then renewable annually.
Warranty, Care & Maintenance
How the ownership risk is covered
Standard Warranty - 12 Months
Included with every EXRAY™Covers manufacturing defects for 12 months; Hydromea repairs the defective part or supplies an equivalent replacement. Consumables are excluded by nature: thruster magnets and propellers, and the battery (2 years, or below 80% charge / 200 discharge cycles).
Extended Warranty - 24 Months
Included in EnterpriseAdds a further 12 months on the same terms as the standard warranty, for a 24-month total. It can only be bought together with an EXRAY™ package and cannot be extended beyond the 24-month limit.
Care Package - 12 Months
Included: 12 months (Professional) · 24 months (Enterprise)Damage-coverage cover for equipment used in hostile environments: a no-questions-asked replacement of parts broken by accidental damage, plus a full health check and maintenance of your EXRAY™ at Hydromea's Swiss facility or a designated official maintenance partner. Cover is tiered - the first tranche of repair cost is met in full, the next tranche at 80%, and costs above the upper threshold are invoiced in full. External payloads, shipping and local taxes are excluded.
Must be bought with an EXRAY™ package · annual renewal · cannot be restarted once lapsedOwner maintenance schedule
| Frequency | Work to be carried out | Notes |
|---|---|---|
| After each use | Post-dive maintenance | - |
| Every 10 dives | Thruster maintenance | If EXRAY™ has been operated in dirty water containing sand or mud, ignore the interval and carry the maintenance out immediately after that dive. |
| Every 10 dives | Battery cap maintenance | |
| Every 6 months | Connectors maintenance | Also perform the thruster maintenance step every time the battery cap is opened. |
Full step-by-step procedures are in the EXRAY™ User Manual, supplied with every package.
Training & Mission Support
Introductory training is included in every package
Introductory Training - 1 Day
Included for up to 2 people · Renens, SwitzerlandOperators learn vehicle setup, pre-dive checks and basic piloting in a controlled environment, then mission planning, navigation and best practice for efficient inspection work. Hands-on sessions cover routine maintenance, battery management, tether handling and post-mission procedures. Travel expenses are not included.
Data Acquisition Mission (POC) / Mission Support
Per day · pilot and robot includedA professional Hydromea pilot with an extensive mission track record runs or supports your first - or most difficult - dive, bringing in-depth knowledge of EXRAY™ deployment best practice. Charged per day at normal working hours, pilot and robot included, travel excluded. Allow a minimum of four weeks to plan a mission properly.
Book at least 4 weeks ahead - the preparation window is what makes the mission worth doingEverywhere You Need to See
EXRAY's compact size and long endurance open up inspection scenarios that were previously impossible, dangerous, or prohibitively expensive.
Confined Space Inspection
With a 13.4 cm-tall profile, EXRAY accesses tanks, pipes, penstocks and voids that are physically inaccessible to conventional ROVs or that require costly confined-space diver entry.
Hydropower & Energy
Dam walls, intake channels, turbine wells and penstock interiors - clear video and 4K documentation in environments where traditional inspection is dangerous or impossible.
Oil & Gas Assets
Ballast tank interiors, riser annuli and manifold access - with UT thickness, sonar imaging and DVL payloads auto-detected by NAVIA™.
Aquaculture
Net condition assessment, mooring chain inspection and fish-health monitoring. EXRAY's compact footprint minimises disturbance to livestock while covering the whole pen.
Defence & Security
Harbour security surveys, hull threat investigation and infrastructure protection - with optional wireless LUMA operation removing all tether-related signatures.
Municipal Infrastructure
Water reservoirs, sewage outfalls, intake channels and bridge piers - fast, safe, single-operator deployments replacing lengthy dewatering or dive mobilisation.
EXRAY on the Job
Footage from Hydromea - EXRAY's micro-ROV form factor reaching the confined, flooded spaces that conventional vehicles and divers cannot.
EXRAY navigating and inspecting the interior of a ship's ballast water tank - the confined-space survey work it is purpose-built for. Source: Hydromea.
Request a Quote for EXRAY
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