LONG DISTANCE / TUNNEL

AD-400

Built around the demands of the long run.

A specialist platform for long-distance inspection of flooded water tunnels, combining a tethered vehicle with project-specific sensing and tether management.

Get a configuration & quote

Boya Gongdao AD-400 Tunnel inspection ROV

Manufacturer product rendering · Boya Gongdao

TECHNICAL STARTING POINT

Key specifications.

Vehicle weight: 300 kg
Depth rating: 1,000 m
Official-site maximum range: 5 km
Dimensions: 1,600 × 900 × 548 mm
Forward camera: 4K
Rear camera: 1080p
Power: External tethered supply

Manufacturer brochure figures unless explicitly labelled official-site. Confirm the configuration and current version before purchase.

Manufacturer product page

Tasks to assess

Flooded headrace and water-conveyance tunnel assessment
Long-distance projects with an engineered entry and recovery plan
Projects needing a coordinated vehicle, tether and sensing package

Read the application guide

Configuration checks

Review tunnel geometry, bends, elevation profile and obstacles.
Confirm flow limits, tether drag and retrieval arrangements.
Agree position referencing and acceptance criteria before the mission.

COMPLETE SYSTEM

Specify more than
the vehicle.

The official website states a maximum operation distance of 5 km; the supplied brochure lists 5.5 km. The deliverable range must be confirmed against the supplied version and project conditions.

Confirm in the delivered scope

Vehicle and installed payload
Control station and software functions
Tether length, reel and power supply
Selected tools, sensors and deployment equipment
Transport cases, spares, manuals and training

Standard, optional and custom items must be listed separately in the quotation.

PROCUREMENT

Prepare the next review.

Agree the site conditions, acceptance test, delivery scope and support responsibilities. Product names and rated figures alone are not a project specification.