The ocean’s depths present some of the most challenging and costly operational environments for industries ranging from offshore energy to marine research. Traditional solutions have long relied on human divers and cumbersome equipment, exposing personnel to unnecessary risks while limiting efficiency and data quality.
Meet the QYSEA FIFISH E-Master Series.
QYSEA FIFISH E-Master Series represents a paradigm shift in underwater operations, offering a sophisticated robotic solution that combines unprecedented depth capability with intelligent functionality to transform how professionals interact with the subsea world.
Designed specifically for demanding commercial and industrial applications, the E-Master Series redefines what’s possible in underwater robotics. This advanced ROV platform delivers a combination of robust construction, precision imaging, and operational flexibility that addresses the core challenges faced by underwater professionals today. From critical infrastructure inspections to scientific exploration, the system’s innovative design philosophy focuses on delivering reliable performance where it matters most, setting a new standard for what enterprises should expect from underwater robotic systems.
FIFISH E-MASTER: Professional Performance, Field-Ready Design
The FIFISH E-MASTER is the flagship ROV in QYSEA’s professional-grade E-Series, engineered for demanding underwater inspection, exploration, and measurement tasks. Designed with a modular quick-assemble architecture, it allows field teams to easily replace key components—such as thrusters, lights, cameras, and batteries—without needing to return to base. This means less downtime and more adaptability for dynamic missions in offshore, industrial, and scientific environments.
At the heart of the E-MASTER is a hot-swappable dual-battery system, delivering up to 5 hours of continuous operation. Combined with a robust build rated for depths up to 200 meters, and a six-thruster vectored layout that enables true 360° omnidirectional control, the system is capable of handling complex tasks in high-current conditions with stability and precision.
The ROV also comes equipped with advanced AI-powered capabilities, including posture and heading lock, real-time stabilization, object tracking, and precision measurement tools. These features make it ideal for professionals conducting structural inspections, aquaculture monitoring, marine research, or deepwater exploration.
To meet a range of mission profiles, the E-MASTER is available in multiple configurations. Each variant offers tailored tools and navigation systems based on operational needs—from standard inspections to advanced station-locking and bathymetric survey missions.
Explore the E-MASTER Range
View the comparison chart below to see how each E-MASTER model—Standard, PLUS, and NAVI—stacks up in features, capabilities, and mission readiness.
Key Features & Innovations of the FIFISH E-MASTER Series
Unmatched Depth & Durability
All E-MASTER models are built to withstand the pressures of serious underwater operations. The Standard and PLUS models are rated for depths up to 150 meters, while the NAVI model extends that reach to 200 meters—ideal for deep-sea inspections, offshore platforms, shipwreck surveys, and submerged infrastructure analysis.
Constructed with a corrosion-resistant titanium alloy and polymer body, each unit is IP68-rated, ensuring complete protection against saltwater, sediment, and oil-rich environments. The rugged shell resists pressure deformation and long-term wear, delivering durability in harsh marine conditions.
Advanced Maneuverability & Thrust
Six vectored thrusters provide full 360° omnidirectional movement—forward, backward, vertical, lateral, and rotational. This agility is essential for navigating tight or complex environments. With a 5.2 kg thrust output and current resistance up to 3 knots, it remains stable and responsive. The PLUS and NAVI models add enhanced inertial stabilization and optional station lock.
High-Resolution Imaging & Sensing
All models come with a 4K UHD Sony CMOS camera and a 176° field of view for wide, detailed visuals. Dual laser scalers (±1% accuracy) ensure precise measurement of cracks, corrosion, and marine growth. PLUS and NAVI versions support sonar and 3D photogrammetry for enhanced imaging in zero-visibility conditions.
Smart Control & AI Integration
The FIFISH E-MASTER Series integrates AI-assisted navigation to help operators focus on tasks—not just control. Vision Lock enables object tracking and posture hold, keeping the ROV fixed on a target even while moving.
Standard features include auto-depth hold, heading lock, and altitude lock, giving pilots hands-free stability for long-duration inspections. A 300-meter fiber-optic tether ensures low-latency, high-resolution video transmission to the surface. With QYSEA Cloud, operators can remotely monitor, log, and manage mission data, even across teams or regions.
The NAVI model also includes collision avoidance sensors and real-time inertial navigation with Q-DVL support, enabling autonomous navigation and mapping in zero-visibility environments.
Modular & Expandable Design
What sets the E-MASTER Series apart is its modular payload system. All models support interchangeable tool skids, enabling quick swaps of functional tools like robotic arms, ultrasonic thickness gauges, laser systems, sonar, Q-DVL, and docking stations—tailored to the needs of each mission.
All variants feature hot-swappable dual batteries, with operational time ranging from 4 to 8 hours depending on model and configuration. This flexibility allows for both tactical short runs and full-day missions without returning to base. The NAVI model, in particular, supports extended missions and continuous operation with larger-capacity batteries and autonomous systems.
FIFISH E-MASTER Features Matrix: Built for Deep Missions
| Category | E-MASTER Standard | E-MASTER Plus | E-MASTER Navi |
| Max Operating Depth | 150 meters | 150 meters | 150 meters |
| Body Material | Titanium alloy + polymer (IP68-rated) | Titanium alloy + polymer (IP68-rated) | Titanium alloy + polymer (IP68-rated) |
| Movement | 6-vectored thrusters, 360° omnidirectional | ||
| Max Speed / Current | 3 knots | 3 knots | 3 knots |
| Camera | 4K UHD, 1/1.8” Sony CMOS, 166° FOV | ||
| Lighting | Dual 5000-lumen LEDs | ||
| Laser Scaler | Dual laser scalers (±1% accuracy) | ||
| Optional Sensors | Add-ons supported: sonar, 3D photogrammetry, USBL | Includes 3D Scanning Sonar & Laser Module | Includes 3D Scanning Sonar, USBL + Navigation Sensors |
| AI Features | Vision Lock, Auto Depth, Heading Lock | Enhanced with Navi sensors for AI-powered autopilot & tracking | |
| Tether | 300m fiber-optic (standard) | 300m fiber-optic (standard) | 300m fiber-optic (standard) |
| Battery System | Dual hot-swappable batteries (4–8 hrs runtime) | ||
| Storage | 128GB internal + SD slot | ||
| Control System | QYSEA Smart Console + Cloud Support | ||
| Tool Compatibility | Supports robotic arms, sonars, laser scaler, DVL etc. | ||
Choosing the Right FIFISH E-MASTER Model
- E-MASTER Standard is perfect for general underwater inspections and data capture. It offers full maneuverability, a 4K UHD camera, and modular expandability—ideal for users who want a solid foundation with optional upgrades later.
- E-MASTER Plus builds on the Standard by including advanced 3D scanning and laser modules out of the box, making it ideal for detailed structural inspections, precise measurement tasks, and professional-grade visual mapping.
- E-MASTER Navi is the most advanced model, with integrated navigation and positioning sensors (USBL, DVL, IMU) for missions that require precise geolocation, automated path tracking, and real-time mapping—perfect for offshore, scientific, and industrial operations in zero-visibility or GNSS-denied environments.
Real-World Use Cases for the FIFISH E-MASTER Series
The FIFISH E-MASTER is purpose-built for a wide range of demanding underwater missions across industries:
Offshore Oil & Gas Inspections
With its 150-meter depth rating, AI-assisted control, and high-definition imaging, the E-MASTER excels in inspecting subsea pipelines, risers, and platforms. Its stability in strong currents and 360° maneuverability allow for precise inspections around complex structures.
Underwater Infrastructure & Dam Surveys
For hydroelectric plants, bridges, and submerged tunnels, the E-MASTER’s modular payload system enables real-time inspections with tools like sonar, thickness gauges, and robotic arms—minimizing the need for human divers.
Search & Recovery Missions
Emergency response teams leverage its low-light camera and optional sonar to locate submerged vehicles, evidence, or missing persons. The real-time HD feed and object tracking features enhance situational awareness and mission success.
Marine Research & Environmental Studies
Scientists and marine biologists deploy the E-MASTER to observe underwater ecosystems, map coral reefs, and conduct species documentation with minimal disruption. Its stable hovering and wide field of view are ideal for long-duration data collection.
Ship Hull & Dock Inspections
Port authorities and shipping companies use the E-MASTER for routine hull inspections, checking for damage, fouling, or invasive species. Its ease of deployment and long battery life support rapid assessments between voyages.
Your Next-Level Underwater Partner
The FIFISH E-MASTER Series redefines underwater robotics with its blend of intelligent control, modular flexibility, and rugged design. Whether you’re inspecting offshore rigs, exploring marine ecosystems, or conducting underwater surveys, it delivers the performance and reliability professionals demand. With advanced imaging, smart navigation, and real-time data sharing, the E-MASTER isn’t just a tool—it’s a game-changer for subsea operations.
Ready to take your underwater missions to the next level? Connect with us today and experience the power of the FIFISH E-MASTER in action.
