QYSEA QY-BT — Intelligent Bathymetric Mapping Tool
FIFISH Technology · AI Software Module
QY-BT turns a routine FIFISH dive into a full hydrographic survey — automated Q-DVL data collection, customisable 2D/3D terrain maps and one-click capacity calculation, with no separate survey vessel. QYSEA describes it as the world's first AI depth-mapping system for underwater robots.
Collect · Map · Calculate · Report
Survey-grade seabed data from a normal inspection dive
The QY-BT Intelligent Bathymetric Tool is QYSEA's AI depth-mapping system for underwater robots. By combining the Q-DVL sonar, custom depth algorithms and automated path movement, it collects high-resolution terrain and depth data — then turns it into customisable 2D and 3D topographic maps and one-click volume estimates.
It is built for surveyors, hydropower and water-resource teams, inspectors and environmental scientists who need deliverable survey data without mobilising a dedicated survey vessel or crew.
- Automated terrain & depth data collection via Q-DVL sonar and path planning
- Customisable 2D / 3D terrain maps with depth colours and contour lines
- One-click water volume, capacity and area calculation
- Area & perimeter measurement and automated report generation
Three steps, one workflow
QY-BT takes the survey through three stages — automated collection, multidimensional display and one-click calculation — inside a single FIFISH dive.
Terrain Data Collection
Automates underwater inspections using Q-DVL sonar and intelligent path planning, logging terrain and depth data continuously across the survey area.
Multidimensional Display
Generates 2D and 3D terrain maps with customisable depth colours and contour lines — so the seabed reads clearly at a glance.
One-Click Capacity Calculation
Calculates water volume, capacity and area directly from the collected spatial data — no manual post-processing required.
Intelligent Path Planning
Plan the survey area, press go, and QY-BT flies a systematic path while the Q-DVL sonar logs terrain and depth — keeping the operator out of the manual grind of a lawnmower survey.
Consistent coverage, repeatable every time
QY-BT automates the data-collection run: the FIFISH ROV follows a planned path while the Q-DVL sonar measures the bed beneath it. Because the path is systematic and repeatable, surveys can be re-flown for change detection — silt build-up, scour or seasonal capacity shifts — without re-piloting by hand.
- Intelligent, automated path planning across the defined survey area
- Continuous terrain & depth logging from the Q-DVL sonar module
- Repeatable runs for monitoring change over time
- Basic operation on mobile devices; advanced features on a Windows 10+ (64-bit) PC
Customisable 2D & 3D Terrain Maps
The collected data renders into clear, customisable topographic maps — depth colours, contour lines and full 3D terrain you can rotate, profile and present.
Read the bed at a glance
QY-BT renders the survey as a depth-coloured contour map with labelled depth values, registered over the real site so the topography is immediately legible. Customise the depth colour ramp and contour intervals to suit the water body and the audience for the report.
- Depth-colour shading from shallow to deep with labelled values
- Contour lines at customisable intervals
- Customisable map area and presentation parameters
From flat contours to full 3D terrain
Switch between a 2D contour view with cross-section profiles and a fully reconstructed 3D terrain model. Drag a profile line across the map to read the bed cross-section, or rotate the 3D surface to inspect channels, scour holes and structures from any angle.
- 2D contour view with draggable profile lines and cross-sections
- Rotatable 3D terrain reconstruction of the surveyed bed
- Built directly from the Q-DVL depth data — no third-party software
One-Click Capacity, Area & Reports
Beyond a map, QY-BT delivers numbers — water volume, capacity, area and perimeter — and packages them into automated reports.
Turn the survey into deliverable numbers
From the spatial data it collects, QY-BT calculates water volume, capacity and area in a single click — ideal for reservoir and basin capacity studies. It also measures area and perimeter and generates automated reports, so the output of a dive is a finished deliverable rather than raw data to wrangle later.
- One-click water volume & capacity calculation from spatial data
- Area & perimeter measurement of the surveyed water body
- Automated report generation from the collected dataset
QY-BT Map Screenshots
Actual 2D and 3D outputs produced by QY-BT in the field — contour maps, profile cross-sections and reconstructed terrain.
Available on these FIFISH models
QY-BT currently supports the FIFISH W6, E-GO and E-MASTER — each running with the Q-DVL sonar module, which the tool requires for depth data collection.
FIFISH W6
QYSEA's six-thruster professional ROV. With the Q-DVL module fitted, the W6 runs full QY-BT bathymetric surveys alongside its inspection work.
FIFISH W6 →FIFISH E-GO
The portable FIFISH platform. Paired with the Q-DVL sonar, E-GO brings QY-BT mapping to sites where a compact, single-operator deployment matters.
FIFISH E-GO →
FIFISH E-MASTER
The flagship industrial platform. QY-BT is one of its four onboard AI modules, working with the forward and downward Q-DVL for survey-grade mapping.
FIFISH E-MASTER →All three models require the Q-DVL sonar module for QY-BT data collection.
Application Scenarios
QY-BT replaces dedicated survey mobilisation across inspection, water-resource and environmental work — wherever you need to know the shape and capacity of what's underwater.
Bridge Inspections
Survey the riverbed and scour around piers and abutments to monitor foundation safety over time.
Hydropower & Water Resources
Reservoir and dam capacity surveys — measure storage volume and track sediment build-up without dewatering.
Jacket, Electrical & Pipeline
Map the seabed around jacket structures, cables and pipelines for installation, free-span and burial checks.
Ecological & Environmental Surveys
Characterise basin and riverbed morphology for habitat, dredging and environmental impact assessment.
Dredging Support
Pre- and post-dredge bathymetry with one-click volume to verify material removed and target depths reached.
Hydrographic Survey
Deliverable 2D/3D topographic maps of seabeds, riverbeds and reservoirs from a single FIFISH dive.
Reservoir & Basin Capacity
One-click capacity estimation for reservoirs, settling basins and intakes — fast, repeatable, diver-free.
Infrastructure Monitoring
Re-fly repeatable surveys to detect change around submerged infrastructure across maintenance cycles.
Request QY-BT Pricing
Tell us which FIFISH platform you run and what you need to survey, and we will prepare a complete EUR quote — including the Q-DVL sonar module QY-BT requires.
Request a Quote — QYSEA QY-BT
Describe your survey requirements and we will recommend the right FIFISH platform and QY-BT configuration for your operations.