Non-destructive testing (NDT) finds cracks, corrosion and other defects in hulls, welds and steel structures without damaging them. Since 2010, NDT has been one of our core specialisms. We test 24/7, worldwide: on land, in dock and at sea, for ship owners, shipyards, offshore operators and industry.
Our experienced technicians and engineers support class surveys, repair inspections and condition assessments. Ned Marine is approved by the major classification societies, including DNV and Bureau Veritas for NDT and ultrasonic thickness measurements, and is ISO 9001 and SCC (VCA) certified.
Vessel in port soon? Call +31 180 420 055 | info@nedmarine.com | Contact form
Our NDT Methods
- Ultrasonic Testing (UT) and Ultrasonic Thickness Measurements (UTM): wall thickness of hull plating and internal flaws in welds and steel.
- Magnetic Testing (MT): surface and near-surface cracks in ferromagnetic steel and welds.
- Penetrant Testing (PT): surface-breaking cracks in non-porous materials.
- Visual Inspection (VT): visible damage, weld condition, alignment and leakage.
- Vacuum Box Testing: leak testing of welds and tank bottoms.
- Eddy Current Testing (ET): surface and near-surface flaws in electrically conductive materials.
Not sure which method you need? Describe the problem or send the surveyor’s instructions. We’ll advise.
Inspections and Surveys
Besides NDT, our inspectors carry out inspections and surveys, including Special Surveys and pre-condition surveys to find cracks, buckling and significant corrosion:
- Hatch Tightness Testing
- New Building Inspections
- Coating Inspections
- Pre Conditional Surveys (pre-vetting inspections)
- Hull Condition Monitoring
- Superintendency
Where We Test
- In port or at the shipyard: hull, weld and machinery inspections during a port call or repair period.
- In dry dock: surveys and measurements while the vessel is docked.
- At sea: testing on board during the voyage.
- Offshore and onshore: platforms, wind farms, storage tanks and industrial installations.
Our headquarters is in Ridderkerk, close to the port of Rotterdam, and our inspectors work worldwide.
Class Surveys and Reporting
For class-related work, tell us the classification society, survey type and the surveyor’s instructions. We match the method, the inspector and the report to the society’s requirements before we start. Our reports cover the locations examined, the method, the measurements and findings, with photos or sketches where useful. See our certificates and approvals.
Remote NDT with Drones and ROVs
Tanks without scaffolding, hulls without divers: our drones and ROVs carry out visual inspections and ultrasonic thickness measurements in hard-to-reach places, up to four times faster than traditional methods. See drone and ROV inspection.
What Does NDT Cost?
The price depends on the method, the number of components or measuring points, access, travel and the report you need. A work list, photos or class instructions help us quote quickly and accurately.
NDT Training Centre
Looking for NDT courses rather than an inspection? Visit our NDT Training Centre.
What to Send to Book
- Vessel or installation: name and type
- What needs testing: hull, welds, tanks, machinery or a suspected defect (no need to know the method)
- Where: port, yard, dry dock, at sea or offshore
- When: preferred date, port call or survey deadline
Class society, work list, drawings or earlier reports are welcome but not required for a first request.
Request an NDT quotation: +31 180 420 055 | info@nedmarine.com | Contact form
One Partner on Board
While our inspectors are on board, we can also inspect and replace sacrificial anodes and check your pilot ladders and gangways. One supplier, one point of contact.
