FIFISH V6 PLUS — Advanced Inspection ROV
Advanced Inspection ROV · V Series
QYSEA's enterprise V Series ROV — 150 m depth, intelligent distance & altitude sonar lock, AR Ruler and laser scaler with ±1 cm precision, and 4K imaging in a 5 kg, single-operator platform. Powerful, high-precision & intelligent.
Powerful · High Precision · Intelligent
An industry-class inspection ROV in a compact size
The FIFISH V6 PLUS is QYSEA's enterprise advanced-inspection ROV — the most capable model in the V Series. It builds on the V6 EXPERT's professional imaging with the tools to quantify what you see: an intelligent distance & altitude sonar lock for consistent standoff and altitude, plus AR Ruler and laser-scaler measurement with ±1 cm precision, all from a 5 kg platform one person can carry and launch.
- 150 m depth rating with a 200 m standard tether
- AR Ruler + laser scaler — ±1 cm precision, machine vision and laser combined
- Intelligent distance & altitude sonar lock with obstacle avoidance and terrain scan
- 4K UHD · 12 MP · 240 FPS slow-motion · F/2.5 · 166° FOV
- DNG (RAW) capture · 128 GB SD storage · 6,000-lumen 5,500 K LEDs
- True 360° omnidirectional movement with posture lock and depth lock
- Optional Onshore Power Supply System · VR head-tracking support
The problems the V6 PLUS was built to solve
Visual-only inspection ROVs leave engineers guessing. The V6 PLUS adds measurement, sonar awareness and depth to remove those limits.
📐 Can't Measure
Visual footage alone isn't quantifiable. AR Ruler and the laser scaler deliver ±1 cm, documented measurement straight from the feed.
🌊 Drift & Standoff
Holding a fixed distance from a hull or dam face by hand is tiring and inconsistent. Distance and altitude lock hold it automatically.
⚠️ Blind Spots
Nets, debris and protrusions are easy to hit in confined water. Forward sonar warns of obstacles and scans terrain ahead.
⏱️ Runtime Limits
Battery endurance caps long inspections. The optional Onshore Power Supply System runs continuously through the tether.
True 360° Omnidirectional Movement
A six-thruster vectored layout moves the V6 PLUS in all six axes at once — with posture lock and depth lock holding it steady for clean, repeatable inspection passes.
Move freely, then hold rock-steady
The V6 PLUS moves forward, laterally, vertically and rotates fully — all simultaneously. With no fixed thruster alignment there are no blind angles in confined spaces, around structures or during close-up inspection. When you need to stop and document, posture lock and depth lock hold the vehicle's attitude and depth so the camera stays on target.
- Six-axis vectored thrust for omnidirectional control
- Posture lock (IMU-based) and depth lock (pressure-sensor based)
- Q-STEADY electronic stabilisation for smooth, usable footage
Intelligent Distance & Altitude Lock
The V6 PLUS pairs forward and downward sonar to hold a precise standoff distance, lock altitude above the seabed, avoid obstacles and scan the terrain ahead — keeping inspection runs consistent and safe.
Hold a precise standoff — hands free
Forward-facing sonar maintains a programmed standoff distance from any target surface — hull plating, pipe walls, dam faces — automatically holding distance as the surface contours change so the camera stays at the optimal focal range. Downward sonar measures height above the seabed and holds a set altitude, essential for survey transects and pipeline passes that need consistent height for accurate data.
- Forward distance lock — consistent standoff for close inspection
- Downward altitude lock — steady height for survey & mapping passes
- Foundation for clean, repeatable AR Ruler measurement
Forward Distance Lock
Holds a programmed standoff from target surfaces and adjusts automatically as the surface contours change, keeping the camera at the optimal focal distance throughout a run.
Downward Altitude Lock
Measures height above the seabed in real time and holds a set altitude — essential for seabed transects, pipeline passes and mapping where consistent height matters.
Obstacle Awareness
Forward sonar scans ahead for obstacles — nets, debris, structural protrusions — and alerts the pilot, while terrain scan maps the seabed depth profile ahead of the ROV.
AR Ruler & Laser Scaler
The V6 PLUS combines two complementary measurement methods — an augmented-reality virtual ruler and a physical dual-point laser scaler — for ±1 cm precision directly in the live feed, with no contact with the subject.
Tap two points. Read the measurement.
The AR Ruler overlays a virtual measurement scale on the live video feed using machine-vision analysis. Tap two points on the screen and the distance between them is measured in real time — no physical contact with the subject required. Measurements are embedded in the recorded footage, so crack widths, corrosion areas and structural gaps are documented as you fly.
- Measure crack widths, corrosion areas and structural gaps
- No physical contact — works from a distance
- Measurements embedded in recorded footage for reporting
AR Ruler in Action
Tap two points to measure distances live in the FIFISH app feed — the virtual ruler tracks the scene as the ROV moves.
Dual-Point Laser Scaler
Two parallel laser points at a calibrated separation project a permanent scale reference onto the subject — visible in recorded footage.
AR Ruler
A virtual scale overlaid on the live feed by machine-vision analysis — quantify what you see without touching it.
- ±1 cm measurement accuracy
- Measure crack widths, corrosion areas and structural gaps
- No physical contact — works from a distance
- Measurements embedded in recorded footage
- Customisable virtual-ruler orientation
Laser Scaler
Two parallel laser points are projected onto the subject at a precisely calibrated fixed separation — a permanent scale reference burned into the footage.
- Permanent scale reference visible in recorded footage
- Measurement via the FIFISH App and PC software
- Works on video review after the dive
- Defensible scale for reporting & compliance documentation
Inspection reporting: AR Ruler measurements and laser-scaler footage can be included directly in inspection reports — providing reproducible measurement evidence for structural assessment, maintenance planning and regulatory compliance.
4K Imaging, 6,000-Lumen Lighting & VR Control
A professional imaging package for defensible inspection records — with optional VR head-tracking for a true first-person dive.
See it in fine detail, document it in RAW
A 4K UHD camera captures 12-megapixel stills and up to 240 FPS slow-motion through an F/2.5 lens with a 166° wide-angle field of view. DNG (RAW) capture preserves maximum sensor data for professional post-processing, and 6,000-lumen 5,500 K LEDs light the scene in dark or turbid water. Footage and stills record to a 128 GB removable SD card.
4K UHD · 240 FPS
4K video, 12 MP stills and up to 240 FPS slow-motion capture for detailed inspection and analysis.
DNG (RAW) Capture
Full RAW preserves maximum sensor data for professional post-processing and engineering reports.
6,000-Lumen LEDs
5,500 K lighting illuminates dark and turbid water for clean, usable footage at depth.
Pilot from a first-person view
With compatible VR goggles (purchased separately), the V6 PLUS becomes an extension of your own movement — the camera follows your head in real time for a true first-person dive. Natural, intuitive control that makes complex inspection passes and immersive exploration effortless.
- Real-time head-tracking camera control
- Requires separately purchased VR goggles
- Intuitive control for complex inspection passes
Q-Motor & Flexible Power Options
Corrosion-resistant Q-Motor thrusters and two power options — standard battery for mobile work, or the optional Onshore Power Supply System for continuous fixed-site operation.
Run all day from a topside power source
QYSEA's Q-Motor system pairs corrosion- and sediment-resistant thruster seals with stabilisation tuned for demanding saltwater work. For mobile deployments the internal battery gives portable, cable-free operation; for long fixed-site inspections the optional Onshore Power Supply System routes power through the tether from a topside unit — so battery endurance no longer limits productivity.
- Q-Motor — corrosion- and sediment-resistant thruster seals
- Standard internal battery for portable, cable-free deployments
- Optional Onshore Power Supply System for continuous fixed-site runtime
Where the V6 PLUS Excels
Measurement precision, sonar awareness and 150 m depth make the V6 PLUS a professional choice for infrastructure inspection, asset management and environmental compliance work.
Water Plant & Dam Inspection
Survey dam faces, intakes and spillways. AR Ruler documents crack widths and corrosion extent for maintenance and compliance.
Ship Hull Inspection
Full hull condition surveys to 150 m. Distance lock holds standoff; the laser scaler gives scale reference for the report.
Storage Tank Assessment
Inspect tank floors, walls and internals. The optional Onshore Power Supply System runs continuously for thorough work.
Aquaculture Monitoring
Net-cage and mooring checks plus water-quality monitoring across pen sites — one ROV with swappable sensor accessories.
Pipeline Inspection
Survey pipelines with altitude lock holding a consistent camera height; AR Ruler documents external defect dimensions.
Offshore Infrastructure
Platform-base and monopile surveys to 150 m — with measurement data embedded directly in the deliverable footage.
Compatible Accessories
The Q-IF Multi-Tool Extension Interface accepts the full V Series accessory ecosystem — from robotic arms and navigation to a comprehensive water-quality sensor suite.
One interface, a full toolkit
The Q-IF interface lets the V6 PLUS carry the accessories it needs for the mission at hand — manipulation, navigation, sampling and environmental sensing — the same ecosystem shared across the V Series.
- Robotic arm, retrieval hook and grippers for manipulation
- U-QPS underwater GPS & DVL station lock for navigation
- Water & mud samplers and a full water-quality sensor suite
Robotic Arm
Object retrieval and manipulation; fragile-specimen collection and tool handling.
U-QPS Underwater GPS
Geo-reference inspection findings with real-time position data and POI labelling.
DVL Station Lock
Hover precisely in currents without constant pilot input.
2D Image Sonar
Sonar imaging for zero-visibility, turbid or night operations.
Water Quality Suite
DO, salinity, pH, turbidity and 4-in-1 sensors for environmental monitoring.
Water & Mud Samplers
Collect water and sediment samples at depth for laboratory analysis.
Q-iRC Industrial Controller
Bright-display industrial remote with smart keys for professional operators.
Metal Detector
Detect buried or obscured metallic objects during seabed survey and search.
Full Specifications
Performance & Physical ▾
| Maximum Depth | 150 metres |
| Vehicle Weight | 5 kg |
| Standard Tether | 200 metres |
| Degrees of Freedom | 6 DOF — 360° omnidirectional |
Camera & Imaging ▾
| Video Resolution | 4K UHD |
| Photo Resolution | 12 megapixels |
| Frame Rate | Up to 240 FPS (slow-motion) |
| Photo Format | DNG (RAW) + JPEG |
| Lens Aperture | F/2.5 |
| Field of View | 166° wide-angle |
| Storage | 128 GB SD card |
| LED Lighting | 6,000 lumens · 5,500 K |
Sonar & Measurement ▾
| Forward Distance Lock | ✓ Real-time sonar distance hold |
| Downward Altitude Lock | ✓ Real-time sonar altitude hold |
| Obstacle Avoidance | ✓ Forward sonar based |
| Terrain Scan | ✓ Seabed profile mapping |
| AR Ruler | ±1 cm · machine vision |
| Laser Scaler | Dual-point · embedded in footage |
Control & Stability ▾
| Posture Lock | ✓ IMU-based |
| Depth Lock | ✓ Pressure-sensor based |
| Stabilisation | Q-STEADY electronic |
| Motor Technology | Q-Motor (corrosion + sediment protected) |
| VR Support | ✓ Head-tracking (goggles sold separately) |
Power ▾
| Standard Battery | Internal rechargeable |
| Onshore Power (optional) | OPSS — continuous runtime via tether |
Accessory Interface ▾
| Tool Interface | Q-IF Multi-Tool Extension Interface |
| Compatible Tools | Robotic Arm, Water Sampler, Water Quality Detector, Q-Camera, Metal Detector, Retrieval Hook, Mud Sampler, pH Sensor, 4-in-1 Quality Sensor |
Specification Sheets & Brochures
Download the official QYSEA FIFISH V6 PLUS documentation — technical specifications — sourced directly from QYSEA.
Request V6 PLUS Pricing
Tell us about your inspection requirements and we will prepare a personalised EUR quote including any accessories and the optional onshore power supply system.
Request a Quote — FIFISH V6 PLUS
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