2227 verified suppliers listed

Best Marine & Offshore NDT Inspection Companies

Marine and offshore NDT inspection is a specialized discipline combining non-destructive testing expertise with the access techniques, safety protocols, and regulatory requirements of marine and subsea environments. Offshore NDT companies perform topside platform inspection using rope access (IRATA/SPRAT certified), subsea pipeline and riser inspection via ROV or commercial diving, and marine vessel hull and structural assessment under classification society requirements (ABS, DNV GL, Bureau Veritas, Lloyd's Register). These companies bridge the gap between conventional industrial NDT and the operational realities of offshore environments — tidal zones, confined spaces, remote locations, and the regulatory frameworks of USCG, BSEE, and international maritime organizations.

Why these suppliers?

  • Marine NDT companies with IRATA-certified rope access technicians can reach difficult-to-access offshore structures without scaffolding — reducing cost and mobilization time for inspection of platforms, wind turbines, bridges, and marine terminals.
  • Classification society–recognized inspection services provide survey documentation that satisfies flag state and port state requirements for commercial vessels, offshore units, and floating production facilities.
  • Subsea inspection capability — through ROV inspection or commercial diving NDT — is essential for assessing the integrity of jacket structures, pipeline risers, subsea manifolds, and seabed pipelines that cannot be accessed from surface.

250 verified suppliers found

Howell, Michigan4.0(5)

About us The MS Ultrasonic Technology Group is a technology and innovation leader in the field of ultrasonic welding of plastics and is part of the Schunk Group. Read more Ultrasonic welding Ultrasonic technology has already established itself in many industries due to advantages such as precision, tightness and much more. Read more

+1 800-423-0154Website
Fontana, California4.5(13)

Any accredited testing facility will give you accurate and reliable results. But at NDT, we’re committed to helping you meet project deadlines too. We provide the results you need in a day or two, not a week or two.

+1 909-988-4054Website
Webster, Texas4.0(3)

Birring NDE Center is NDT training school in the Houston area. We are a TWC approved Career School. Financial Aid is available for qualified students. We also offer NDT consulting and testing services.

+1 281-488-8944Website
Portland, Oregon5.0(3)

NDE Professionals, Inc. specializes in providing Nondestructive testing and Quality consulting to the Commercial Aerospace, Defense, Energy, Maritime, Petrochemical, Pulp and Paper, Semiconductor and Transportation Industries.

+1 503-287-5255Website
Bryan, Texas3.5(4)

Helping With Your Industrial Radiography Needs NDE Solutions, LLC is a mid-size NDT company specializing in Radiographic Testing (RT).  We take pride in our ...

+1 979-778-8783Website
Jackson, Michigan

Eddy Current Specialists

+1 517-788-7858Website
LaPlace, Louisiana5.0(1)

Industry-leading NDT and heat treatment services in Florida, ensuring precision, safety, and compliance. Trusted solutions for non-destructive testing and heat treatment.

(985) 248-3032Website
Houston, Texas5.0

NDTCS, An ISO Certified Comp., offers NDT Testing, training, NDT certification, auditing & NDT inspection, & Level III Consulting services in the field of NDT.

+1 832-237-2800Website
Houston, Texas4.9(13)

Our new game-changing pipeline inspection technology is here!

+1 832-462-1000Website
Brantford, Michigan4.6(10)

Discover reliable field and lab Non-Destructive Testing services in Grand Rapids with over 115 years of experience. Ensure integrity with cutting-edge techniques and certified personnel.

(519) 304-9199Website
Franksville, Wisconsin

Non-Destructive Testing services include material testing, mechanical integrity, concrete testing, structural steel bridge and building inspection & testing, aircraft ndt inspection, welder qualification & weld inspection, aerial equipment inspection, and ndt laboratory testing.

+1 262-878-8700Website
West Chester, Pennsylvania

Non-destructive testing instruments, ultrasonic thickness gauges, flaw detector, supplies

+1 610-793-1700Website
Monterey, Tennessee

We provide comprehensive instruction!

+1 716-812-8165Website
Doral, Florida5.0

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+1 786-280-4933Website
Covington, Georgia1.0(2)

ndtmart.com Non Destructive Testing supplies NDT equipment, accessory and consumables to companies working in the field of Non Destructive Testing - hardness testers,coating thickness gauge,thickness gauge,ultrasonic thickness gauge,ultrasonic couplant,performa

+1 770-787-7002Website

Frequently Asked Questions

What certifications should an offshore NDT company have?
Look for IRATA (or SPRAT) rope access certification at the technician level for topside access, combined with NDT certifications at ASNT Level II minimum. For offshore oil and gas work on the U.S. OCS, BSEE familiarity and BOSIET/HUET safety training are standard requirements. Companies performing structural inspection for commercial vessels should be recognized by one or more major classification societies (ABS, DNV GL, Bureau Veritas, Lloyd's Register). For subsea pipeline work, Pipeline Operators Forum (POF) or ASME B31.4/B31.8 familiarity is valuable.
What NDT methods are used for offshore platform inspection?
Visual testing (VT) by certified inspectors is the primary method for general condition assessment and identifies areas requiring further examination. Magnetic particle testing (MT) and liquid penetrant testing (PT) are standard for surface crack detection on welds, stress concentration points, and areas of visible damage. Ultrasonic testing (UT) — including phased array and corrosion mapping — is used for wall thickness measurement and flaw characterization. Alternating current field measurement (ACFM) and eddy current testing (ET) are used for fatigue crack detection in weld toes and tubular joints without requiring full surface cleaning.
How do I find a subsea NDT company for pipeline inspection?
Subsea pipeline inspection typically requires either commercial diving NDT or ROV-deployed inspection systems for areas where diving is not practical. Look for companies with IVE (In-Service Inspection for Vessels) or pipeline-specific experience and classification society recognition. For flooded member detection (FMD) on jacket structures, specialist equipment is required. For internal pipeline inspection (smart pigging or corrosion logging tools), you'll need a different class of in-line inspection (ILI) vendor. Our directory includes marine inspection companies across these service categories — use the industry filter to narrow results.

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