Underwater Pipeline Inspection
We reveal the condition of your underwater lines before leaks speak: the as-found route is located with side-scan sonar and a pipe tracker tied to GNSS, followed by detailed sonar coverage and visual capture by diver or ROV to document corrosion, seabed exposure and free spans, mechanical damage, and cathodic-protection condition. The result is a condition report with coordinates and a severity rating for every finding plus prioritized repair recommendations — a document maintenance and insurance plans can rely on.
- Turnaround
- Based on pipeline length
- Deliverables
- 4
- Coverage
- 2 cities
By the numbers
- Sonar + visual
- Inspection method
- ROV/diver
- Access method
- GNSS
- Positioning
The problem we solve
Marine and river pipelines suffer corrosion, exposure, and damage unseen from the surface. Sonar + visual inspection reveals the line's condition and risk points before a costly leak.
Who needs this service
Oil and gas companies, water and wastewater utilities, and port authorities operating underwater lines.
When you need this service
- For periodic inspection of marine/river lines
- After storms or incidents to confirm integrity
- To document corrosion and exposure points
How we execute
- 1
Locate the line precisely with sonar
- 2
Sonar survey and visual capture via diver/ROV
- 3
Analyze corrosion, exposure, and damage
- 4
Compile a condition report with recommendations
What we need from you
- Pipeline route and basic data
- Access and navigation permits
- Previous inspection records if available
What you receive
- Line condition report with critical points
- Sonar and visual imagery/clips
- As-found pipeline route coordinates
- Repair and priority recommendations
Equipment & methodology
We equip this service from our owned fleet of 90 instruments:
Sonar & hydrographic
Single-beam echo sounders and survey vessels for bathymetric and hydrographic surveys.
We own and operate our field fleet — our site shots carry the “From our field work” chip, alongside class-reference photos.
Available in
Frequently asked
How do you locate the line underwater?+
We use side-scan sonar and a pipe tracker with GNSS positioning to map the as-found route accurately.
Do you work in rivers and canals too?+
Yes, we inspect lines in both marine and river environments depending on site conditions.
How much does underwater pipeline inspection cost?+
It depends on scope: line length, water depth and setting (marine or river), access method (diver or ROV), the required documentation level, and permit and safety requirements. Periodic inspections under an annual contract get a preferential per-kilometre rate. Share the line data and location and we will return a detailed quote.
What exactly does the inspection reveal?+
We document seabed exposure and free spans, corrosion and visible coating condition, mechanical damage, and encroachments on the line corridor — each finding with coordinates, imagery, measurements, and a severity rating — so the maintenance team knows where to act first and why.
How often should the inspection be repeated?+
For critical lines (oil, gas, or main water transfer) we recommend annual or semi-annual inspection, plus one after any storm or navigation incident near the corridor. Comparing each survey with the previous one reveals corrosion rates and seabed movement early, turning maintenance into a numbers-driven preventive program.
Our crews on real projects
Real photographs from GeoGiza's field projects across Egypt and the region.
Browse by capability, sector, or instrument
Our guarantees to you
We take the risk off your project — so you can commit with confidence.
Accuracy guarantee
If a deliverable misses the agreed accuracy spec, we re-survey and correct it at no extra cost.
On-time commitment
We agree the delivery schedule up front and keep you updated at every stage until it's met.
Full confidentiality
Every engagement is covered by an NDA. Your data and drawings are never shared.
You own the files
You receive the editable source files (DWG, DXF and more) — full ownership, no lock-in.