QYSEA FIFISH E-MASTER FAQ Frequently Asked Questions

Q: What are the key differences between the FIFISH E-MASTER and FIFISH E-GO?
A: FIFISH E-MASTER (NAVI Model), features an upgraded 200 standard dive depth, features a built-in proprietary
laser scaler, Q-DVL modules on its front side and below its body, and an Echosounder. These essential components
enable the E-MASTER’s automated and smart navigation, hovering stability, as well as smart measurement and
mapping capabilities.
Following FIFISH E-MASTER models, such as the E-MASTER PLUS, also feature a standard dive depth of 200m,
an integrated laser scaler with a forward Q-DVL module, and an echosounder, but without the downward Q-DVL.
The E-MASTER Standard model comes with a built-in echosounder, with various add-ons that can be integrated
later on.
At the same time, FIFISH E-MASTER also includes the essential features of the E-GO, including its modular system
design, hot-swappable power, robust multi-tool payload, 4K wide-angle camera system, and >3 knots powerful
propulsion.

2

Q: How does the battery life of the E-MASTER compare with E-GO?
A: FIFISH E-MASTER has a battery life of approximately 1-4 hours (depending on your diving applications), the
same as the FIFISH E-GO. The batteries between the FIFISH E-MASTER and FIFISH E-GO are also
interchangeable.

3

Q: What key application scenarios are suitable for the FIFISH E-MASTER
A: The FIFISH E-MASTER’s compact design and powerful functionality make it ideal for various industries requiring
accurate inspections, precise location information, and intuitive surveying. Key application scenarios include:

Shipping & Ports: Detailed ship hull and port inspections.
Civil Infrastructure: Assessing underwater structures and its surrounding environment.
Tank Inspections: Ensure structural integrity without the need to drain tanks.
Offshore Infrastructure: Precision monitoring and maintenance supported by its station-locking capability.
Reservoir Inspections: Evaluate water quality and structural conditions.
Pipeline Inspections: Inspect and assess underwater pipelines for damage or blockages.

4

Q: What is the maximum cable length supported by FIFISH E-MASTER?
A: The E-MASTER includes a standard 200-meter cable and offers customizable options for extending support
up to 500 meters.

5

Who does the FIFISH E-MASTER, with the Q-DVL, achieve stable hovering and inertial navigation?
By combining data from the FIFISH E-MASTER’s internal measurement units (IMU), deth sensors with the QDVL velocity module, the system can estimate the ROV’s position, velocity, and orientation with high accuracy.
By continuously monitoring data from the IMU, depth sensors, and Q-DVL, the E-MASTER’s control system can
make real-time adjustments to the thrusters to counteract any drift or movement. This enables the ROV to
maintain a stable, fixed position in the water, even in the presence of currents or other disturbances.
In addition, the Q-DVL provides accurate velocity data, which, when combined with the IMU’s motion data, allows
the E-MASTER to perform inertial navigation. This means the ROV can estimate its position over time, even
when GPS or other external positioning systems are unavailable, by tracking its movement from a known starting
point.

6

Q: What capabilities can the E-MASTER’s downward DVL and Echosounder achieve?
A: With the Downward DVL and Echosounder enabled together, the FIFISH E-MASTER achieves stable
hovering, automatic navigation, and seafloor depth measurements.
Operators can set the FIFISH E-MASTER on an automated path to collect precise depth data in their targeted
area, which can then be seamlessly exported from the FIFISH APP to produce 2D and 3D maps using QYSEA’s
specialized software, or through third party mapping software.
Components needed: FIFISH E-MASTER AI ROV, Downward DVL, Echosounder, QY-BT PC Software
Application or 3rd PC Mapping Software (i.e. Surfer, must be purchased and used separately)

7

Q: What capabilities can the E-MASTER’s forward DVL and Laser Scaler achieve?
A: With the Forward DVL and Laser Scaler enabled, the FIFISH E-MASTER delivers precise, stable, and clear
inspection footage, along with accurate laser measurements at close proximities.
The E-MASTER’s real-time or recorded footage can be uploaded to the QYSEA QY-MT software application for
intuitive and smart measurements of structures and surfaces of various shapes and sizes. The footage can also
be recorded and exported for essential reference points and professional reports.
Components needed: FIFISH E-MASTER AI ROV, Forward Q-DVL & Laser Scaler, QY-MT PC Application

8

Q: Are the accessories for the E-MASTER interchangeable with the E-GO (battery and other external
accessories, etc.)?
A: As part of the E-SERIES of FIFISH AI ROVs, the add-on tools for the FIFISH E-MASTER are compatible with
those used for the FIFISH E-GO. Tools for the V-SERIES AI ROVs feature a different port design but can be
integrated with the FIFISH E-MASTER using a special port converter supplied by QYSEA.
For more details or specific compatibility inquiries regarding add-on tools, please contact our QYSEA
representatives at [email protected].

9

Q: Does the E-MASTER support a direct or shore-side power supply?
A: The E-MASTER currently does not support direct power supply. A direct power system is in development and
will be available in the near future.

10

Q: What is the best way to maintain FIFISH E-MASTER after each dive
A: To maintain the FIFISH E-MASTER after each dive:

Motors: Rinse the motors with clean fresh water and activate maintenance mode (guided through the
FIFISH APP) after each use in the oceans, lakes, and other outdoor environments
Battery: Clean the battery interface regularly and apply lubricating oil to ensure proper functionality.
For more details or specific compatibility inquiries regarding suitable lubricating oil brands, please contact our
QYSEA representatives at [email protected].

11

Q: If there are new features in the future, can the FIFISH be updated and upgraded?
A: All FIFISH Underwater Robots can be updated via software upgrades through the FIFISH Official APP. When
new functions and AI features are introduced, they will be available through the official app, ensuring that every
user can access the latest functionalities and enjoy the best experience as soon as they become available.

12

Q: What is covered under the warranty for FIFISH E-MASTER?
A: The warranty for the FIFISH E-MASTER covers:

ROV Components: Includes the camera, lighting, sensors, motors, and other essential parts.
Package Accessories: Covers the robotic arm, remote controller, charging adapters, and other included
accessories.

We recommend performing an initial guided self-test upon receiving your package to ensure all parts are functioning
correctly. If you encounter any issues during this process, we are available to assist you.