ROV NDT & Inspection

Geo Oceans is ISO 17025 certified as an NDT inspection body. We hold additional accreditations including ABS Hull Gauging, ABS Remote Inspection Techniques (ROV), ABS In-Water Survey, BV Thickness Measurements of Hull Structures, BV Remote Inspection Techniques, BV In-Water Survey, DNV Close-up Survey, DNV NDT on Classification Projects, DNV Thickness Measuring, DNV In-Water Survey (ROV), Lloyd’s Register Remote Inspection Techniques (ROV) and LR Thickness Measurements of Hull Structures.

Our NDT and ROV personnel have completed hundreds of projects successfully across Australia, Asia, West Africa, Brazil, and the USA. They are highly qualified, skilled, and experienced across a wide range of inspection and testing methods, ensuring a best-in-class outcome and high-quality data and reporting outputs.

Conventional Subsea NDT

Non-destructive testing (NDT) involves detecting and assessing flaws in materials without causing damage. Geo Oceans has proven experience in subsea NDT inspection planning, advising clients on NDT methods, and providing recommendations and solutions to ensure compliance to international and Australian standards.

Our Mini-ROV systems integrate state-of-the-art cameras, sensors and manipulator technology onto small, powerful and agile ROVs to expand their capabilities to cover a range of conventional NDT such as ultrasonic thickness measurement (UTM) or eddy current inspection (ECI).

Conventional subsea NDT.
Our conventional subsea NDT services include:
  • Improved Data – Advanced data collection and processing techniques improving repeatability
  • Reduced Cost - Mini-ROV deployment directly from FPSOs, Modua platformns
  • Rapid Mobilisation - Equipment and personnel can be mobilised on helicopters and commercial planes at short notice
  • Minimal POB – Small multi-skilled NDT and ROV teams resulting in minimal POB during inspection campaigns
  • No Confined Space Entries – Eliminate the need for commercial diving, manned entry and confined space entry
  • Minimised HSE Risk – Reduced health & safety risk by eliminating high-risk activities

ROV Advanced Subsea NDT

Geo Oceans has proven experience in ROV subsea non-destructive testing (NDT) inspection planning, advising clients on NDT methods and providing solutions to ensure compliance to international standards.

Working with our sister company Sonomatic, we can provide a complete collection of ROV subsea advanced NDT solutions. The Mini-ROV tools are operated using topside

controlled actuator arms and our technicians have hundreds of hours of flight experience, being able to manoeuvre a vehicle with millimetre accuracy.

Our advanced NDT attachments can perform Ultrasonic Testing (UT) and Alternating Current Field Measurement (ACFM) and c-scan corrosion mapping. We can also deploy advanced NDT equipment capable of detailed corrosion mapping in a payload capacity.

Our ROV Advanced Subsea NDT services include:
  • Alternating Current Field Measurement (ACFM)
  • Flooded Member Detection (FMD)
  • Ultrasonic Thickness Testing (UTT) – semi-automated and automated
  • Computed Tomography (CT)
  • Phased Array Corrosion Mapping.
  • Dynamic Response Spectroscopy (DRS)
  • Pulsed Eddy Current (PEC)
  • Time of Flight Diffraction (screening and welds)

ROV-Deployed Stingray Services

Geo Oceans offers advanced subsea inspection solutions through the integration of our ROV-deployed systems with sister company Sonomatic’s Stingray automated scanner. These services are designed to deliver high-resolution, platform-based inspections in support of asset integrity.

Using compact ROVs deployed directly from offshore platforms, our team can conduct complex inspection scopes such as Flooded Member Detection (FMD) and

corrosion mapping without the need for large vessels. This approach minimises cost, reduces risk, and increases operational efficiency.

Through our close collaboration with Sonomatic, Geo Oceans provides clients with reliable, innovative subsea inspection methods that drive safer, more informed asset management decisions.

Key Capabilities Include:
  • Marine Growth Removal: Precise and targeted cleaning to prepare surfaces for inspection, even in challenging subsea conditions and at depth.
  • Stingray Deployment via ROV: Integration of Sonomatic’s subsea scanner onto our ROVs to deliver an efficient, platform-based operation, ensuring the delivery of high-quality data collection.
  • Platform-Based Operations: All inspections are performed from the platform, significantly reducing logistics and improving project agility.

SURFACE CLEANING AND PREPARATION

Any areas requiring NDT that are covered in marine growth or are badly corroded can be cleaned for coating assessments, CVI, CP, UTM or advanced NDT inspections, through using our ROV systems. Marine fouling can be removed without damaging the coatings or infrastructure, using tools including mechanical scrapers, brushes and high-pressure water blasters. The tools are operated using topside-controlled actuator arms. Marine growth scaling is performed using gauges and metrology.

Project Examples