4D Distance Lock Module

Maintains a fixed, user-set distance to targets for steady inspections and filming
Actively compensates for surge/sway/heave to reduce focus hunting and shaky footage
Plug-and-play add-on for compatible ROVs; quick enable/disable from the app/controller
Improves task efficiency for close-range work (NDT, hull checks, aquaculture, search & survey)
Visual distance readout with fine step adjustments for repeatable shots
Works in turbid water conditions; range depends on clarity and ambient light
Low-drag module design; optimized to minimize impact on maneuverability

Description

4D Distance Lock Module

Section	Item	Spec / Detail
Function	Distance control mode	Locks and maintains user-set standoff distance to subject
	Axes compensated	Surge, sway, heave (forward/back, lateral, vertical) with heading hold support
	Typical use cases	Visual/NDT inspection, aquaculture net checks, hull & keel survey, dam & pier scans, photography/videography
Performance	Working distance*	Short to mid-range; typical ~0.5–6 m (varies with water clarity & lighting)
	Adjustment granularity	Fine step distance tuning via app/controller
	Telemetry	Real-time distance readout in on-screen HUD
Compatibility	ROV ecosystem	Designed for supported QYSEA/FIFISH-series ROVs (model-specific availability)
	Mounting	Dedicated accessory mounts; tool-less or quick fasteners (by model)
	Firmware/app	Requires current ROV firmware and mobile/desktop app versions
Controls & UI	Enable/disable	One-touch toggle; persists until changed
	Presets	Save/recall preferred distances (subject to app version)
Power	Power source	Draws from ROV accessory/bus power
	Power impact	Minimal; negligible effect on endurance in most use cases
Physical	Module type	Front-mounted ranging/assist module
	Hydrodynamics	Low-profile to minimize added drag
Environment	Operating environment	Underwater deployment with supported ROVs
	Range dependencies	Water clarity, turbidity, reflectivity, ambient light
In the box	Items	Distance Lock Module, mounting kit (per ROV), quick guide
Compliance	Certifications	CE/FCC where applicable (region-dependent)
Notes	*Performance note	Effective range and stability depend on ROV model, payload, and conditions