Deep Fusion of Hardware & Software
Beyond Traditional Boundaries

Powered by advanced deep learning neural networks, QYSEA Technology integrates its proprietary Q-DVL with data from the ROV’s accelerometer, depth sensor, magnetometer, and gyroscope. This synergy equips FIFISH ROVs with key capabilities including U-INS (Underwater Inertial Navigation System), Station Lock Hovering, smart collision avoidance, real-time distance and altitude lock. By pushing beyond the limits of traditional underwater operations, FIFISH redefines what’s possible across a range of subsea applications.





Pioneer Tri-beam Inline Q-DVL
Next-Generation Underwater Sonar Technology

QYSEA Technology's globally pioneering Tri-beam Q-DVL Inline, is designed with a fluid-inspired concept, breaking free from the traditional limitations of DVL form. Equipped with integrated speed and distance measurement capabilities, it seamlessly merges data from IMU and multiple sensors. This innovation enhances the autonomy and agility of underwater robots, elevating navigation, positioning, and operational performance to new heights across vertical underwater structures and complex subsea environments.

1

Innovative Fluid Design
World’s First Inline Q-DVL with Compact Dimension

2

Vertical U-INS

(Underwater Inertial Navigation System)

Expand your inspection capabilities & precision

3

Forward Station Lock Hovering

10cm Macro Focus Distance

4

Forward Collision Avoidance

Reduce risks of close-up inspections

5

Distance Lock & Track

Enable Reliable & Steady Inspections

Innovative Four-beam Q-DVL
Seamlessly Adapted for Diverse ROV Models

With advanced manufacturing processes, QYSEA has significantly enhanced the Downward Q-DVL’s station lock and hover capability in underwater robot applications. With its fully independent development, the Downward Q-DVL sensors are deeply compatible with multiple FIFISH ROV models, delivering innovative capabilities that redefine underwater operations.

1

Self-Developed Sensors

Q-DVL Adaptable Across

Various Models

2

U-INS & Mission Planning

Achieve Efficient Automated Inspections

3

Bathymetric Mapping

Enable 2D & 3D Map Outputs

4

Station Lock Hovering

0.1m-100m Height Range

5

Smart Collision Avoidance

Enhance Safety & Responsiveness

6

Altitude Lock & Track

Empower More Precise Operations

Why QYSEA
Innovates the Q-DVL?
Self Developed,<br>Enhanced Reliability.
Self Developed,
Enhanced Reliability.

Entirely designed and produced by QYSEA, the system seamlessly integrates with FIFISH ROVs, enhancing overall performance, stability, and reliability.

Deep Fusion,<br>Expansive Applications
Deep Fusion,
Expansive Applications

Leveraging deep neural learning networks, Q-DVL and other sensor data are seamlessly integrated with AI algorithms. This advanced fusion delivers a diverse range of functional capabilities tailored to various operational scenarios.

High Performance,<br>Upgraded Operation.
High Performance,
Upgraded Operation.

Through extensive testing in both laboratory and real-world operational environments, the Q-DVL demonstrates exceptional precision in hovering accuracy, positioning data, and detection distance, ensuring stable and reliable performance.

Extensive Versatility,<br>Greater Comprehensiveness
Extensive Versatility,
Greater Comprehensiveness

QYSEA offers a diverse Q-DVL matrix, designed to be compatible with various FIFISH ROV models. This adaptability aims to address a broader range of operational challenges across different industries.

Extensive Applications & Functions

Multi-Dimensional U-INS
(Underwater Inertial Navigation System)

Multi-Dimensional U-INS<br>(Underwater Inertial Navigation System)
Precise Station Lock Hovering
Precise Station Lock Hovering

360° omnidirectional station lock hovering
without dead angles

Smart Collision Avoidance

Ensuring safety in complex
operating environments.

Smart Collision Avoidance
Real-time Distance & Altitude Lock

Effortlessly meet the demands of precision tasks

Real-time Distance & Altitude Lock

U-INS

Multi-Dimensional U-INS
(Underwater Inertial
Navigation System)
Pioneering a New Era of Precise Inspections

QYSEA’s Underwater Inertial Navigation System (U-INS) is a ground-breaking omnidirectional navigation solution independently developed by QYSEA, combining advanced hardware and software integration. When paired with the Forward Inline Q-DVL for navigation, the Downward Q-DVL delivers robust current resistance and tracking capabilities. This innovative combination enables route planning, custom points-of-interesting, and much more, ushering in a new era of autonomous, flexible, and highly efficient underwater cruising.

Subsea Mission Planning

Points-of-interest (POI)>

Customizable
Points-of-interest (POI)

Return Home>

Intelligent One-Key
Return Home

Multi-Dimensional U-INS
Vertical & Curved Surface U-INS
(Forward Q-DVL)
Bottom Surface U-INS
(Downward Q-DVL)

By integrating the Forward Inline  Q-DVL, the ROV achieves groundbreaking capabilities for navigation and positioning across polygonal vertical surfaces, inner and outer curved surfaces, and irregular vertical structures . It also supports multi-axis, multi-angle navigation and route planning, delivering unmatched adaptability and precision.

By integrating the Downward Q-DVL, the FIFISH ROV enables precise navigation and path planning across flat terrains such as sea beds, riverbeds, and lakebeds.

Precise Station Lock Hovering

360° Omnidirectional Station Lock Hovering
Without Dead Angles

Utilizing advanced manufacturing processes, the Q-DVL achieves high-precision, long-duration underwater hovering, offering a maximum detection range of 100 meters and centimeter-level hovering accuracy. Additionally, its 360° omnidirectional adaptive current resistance ensures full-range underwater stability, free of blind spots, for reliable and precise operations in any environment.

Precise Station Lock Hovering

Smart Collision Avoidance

Ensuring Safety in
Complex Operating Environments.

The Forward Inline Q-DVL and Downward Q-DVL are equipped with intelligent collision avoidance capabilities. Utilizing distance data from both directions, combined with AI algorithms, the system accurately identifies collision risks, significantly enhancing the safety and reliability of ROV operations in challenging underwater environments.

Smart Collision Avoidance

Real-time Distance & Altitude Lock

Effortlessly Meet the Demands of Precise Tasks

Equipped with QYSEA’s Forward Inline Q-DVL and Downward Q-DVL, combined with AI algorithm assistance, the ROV achieves simultaneous distance and altitude locking capabilities. This significantly enhances task execution and inspection efficiency across diverse marine operational scenarios.

Real-time Distance & Altitude Lock
QYSEA Sonar Array
QYSEA Sonar Array

FIFISH & Q-DVL Integration Showcase

Forward Inline Q-DVL<br>with Laser Scaler

Forward Inline Q-DVL
with Laser Scaler

Q-DVL Plus

Q-DVL Plus

Q-DVL Max

Q-DVL Max

Forward Inline Q-DVL

Forward Inline Q-DVL

Q-Cam D/L

Q-Cam D/L

Tri-directional Inline Q-DVL

Tri-directional Inline Q-DVL

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