Primary service · Inspection
ROV Inspection for Underwater Structures
Structured visual inspection as an audit-grade alternative to diver deployment. Position-referenced findings capture, defined route, authority-ready report — without operational downtime.
Problem & Triggers
Underwater structures age under fluctuating water levels, ice movement, vessel traffic and chemical exposure — often invisibly, until damage becomes apparent. Diver inspections are costly, hard to repeat and typically produce only verbal protocols. For engineering offices, authorities and operators, that is no longer sufficient.
ScanSustain is typically engaged when a scheduled structural inspection is due, damage patterns need to be recorded, restoration work is being prepared, or diver deployment must be avoided.
Method & Technology
Our ROV inspection follows a defined route, recorded with HD camera, supplementary lighting and position-referenced telemetry. Every finding is captured with timestamp and coordinate, and notable locations are documented with targeted still images.
In limited visibility we complement the optical capture with Sonar & Scanning. For recurring inspections the route is logged so it can be retraced identically next time — the foundation for a later monitoring programme.
Typical Applications
- Quay walls, sheet piles, dolphins and harbour basins
- Bridge piers, abutments and bank structures
- Lock chambers, sills, gate seats and intake structures
- Pipelines, culverts, cooling water intakes and outfall structures
- Industrial and treatment basins, weirs, fish ladders
- Ship hulls and floating structures
Mission Workflow
- Briefing
Objective, asset type, water conditions, documentation requirements and timeline are captured in a structured briefing. - Planning
Route definition, equipment configuration, visibility and current assessment, coordination with operator and authorities if needed. - Execution
Systematic route traversal with ROV. Continuous video recording, still images at notable locations, ongoing position logging. - Processing
Raw data structuring, findings-to-position mapping, findings report generation with image references. - Handover
Data package delivery, findings walkthrough, archival of the reproducibility memo for later repeats.
What You Receive
Sorted raw data
HD video, still images, telemetry data — chronologically and position-referenced.
Findings report
Structured summary with image references, damage classification and action recommendations.
Reproducibility memo
Route and method protocol so follow-up inspections can retrace the same path.
Benefits for the Client
- No harbour downtime, no diver risk
- Full, archival documentation instead of verbal protocol
- Directly usable by engineering offices, authorities and insurers
- Reproducible route as a foundation for later monitoring cycles
- Predictable mission duration: typically 2–6 hours per standard object
Relevant Sectors
ROV inspection is the most commonly requested service in these sectors:
Adjacent Services
If visibility is too low for video, we use Sonar & Scanning. If you need a 3D model or a scaled plan, Survey & Mapping complements the inspection. If the inspection is to be converted into a recurring programme, we plan it as a monitoring programme. For the fundamental method comparison to divers, see the decision aid: ROV vs. Diver.
Frequently Asked Questions
How long does a typical ROV inspection take?
Depending on the object 2–6 hours of field work. A 100–150 m quay wall section or a bridge pier can be inspected in half a day. Report preparation follows within a few business days.
Does operations have to be stopped during the inspection?
In most cases no. ROV inspections are performed during ongoing harbour or plant operations. Closures or diver safety measures are not required.
Is the result authority-ready?
Yes. The findings report follows recognised documentation standards and can be directly integrated into inspection files, expert reports or authority submissions. If needed we align format and structure with the reviewing authority beforehand.
What happens in very turbid water?
We use powerful lighting and supplement with sonar at visibilities below 30 cm. A visibility pre-check is part of mission planning.
Can the inspection be repeated later?
Yes — this is precisely why we log the route and produce a reproducibility memo. Every follow-up inspection can be performed identically, enabling delta comparisons.
Related pages
Would you like to discuss this service for a specific case?
Plan an inspection