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

Sun Valley, California5.0(1)

Discover Aerospace Metal Finishing with NDT Metal Finishing Inc. Our commitment to quality ensures reliable service.

+1 818-807-1381Website
Van Wert, Ohio

At NDT Residential, we believe your home deserves craftsmanship that’s as thoughtful as it is beautiful. Our work is designed to elevate your space with superior quality and functionality.

+1 419-238-9594Website
New Richmond, Wisconsin

NDT Solutions (NDTS) provides Nondestructive Testing Inspection Evaluation and Engineering Solutions spanning hardware, software, mechanical systems, consulting, and specialized equipment.

+1 715-246-0433Website
Nashua, New Hampshire1.0(2)

NDT Systems provides ultrasonic test equipment to a broad range of industries. Our products are suitable to test a wide variety of materials.

+1 714-893-2438Website
South Windsor, Connecticut

NDT Technology, LLC, based in South Windsor, CT, USA, designs and manufactures advanced non-destructive wire rope inspection equipment for high-value and large-diameter ropes, delivering superior performance and innovation worldwide.

+1 860-651-7000Website
Houston, Texas

ISOFLEX supplies stable and radioactive isotopes. We lead in pricing, enrichment, processing, and customer service. ISOFLEX is your premier isotope supplier.

+1 832-834-5406Website
Palatka, Florida3.0(2)

NDT XL offers full service Nondestructive Testing or NDT including penetrant testing, magnetic particle testing, ultrasonic testing, phased array ultrasonic testing, x-ray and gamma ray testing, visual testing, borescope and eddy current testing to our customers with florida, georgia and more

+1 386-385-3461Website
Savannah, Georgia

NDT of yachts based in Florida. Conducting thermal imaging throughout USA and the Caribbean.

+1 904-878-2619Website
Fort Worth, Texas5.0(1)

NIA Consulting & Welding Inspection, LLC - Serving North Texas, Including Dallas, Fort Worth & Abilene

+1 903-491-9769Website
Colorado Springs, Colorado3.5(4)

Non Destructive testing inspections Company iUT, VT, MT, PT, PA testing services available, Training and Procedure revision

+1 719-250-0413Website
Crown Point, New York5.0(1)

North Country NDT provides non-destructive testing of anything – including pressure vessels, steam tanks, piping, storage tanks, paper drying machine mills, and more.

Website
Hurricane, West Virginia5.0(2)

For 60+ years, N.I.S. has led in nondestructive testing. Ensure safety, minimize downtime with expert inspections. Contact us today to support your needs.

+1 304-562-6835Website
San Diego, California5.0(4)

With over 100 years of combined experience supporting navy and commercial industries, Standard Ship Repair travels to shipyards for welding, fabrication, mechanical and other repair projects.

+1 619-231-3808Website
St Paul, Minnesota5.0(2)

Sound Transmission Loss - Sound Absorption - Sound Power - Acoustic Testing Services - ASTM E90 - ASTM C423 - ISO 3744 - ASTM E336 - Acoustic Lab & Field Tests

+1 612-355-1277Website
Oxford, Connecticut

Northeast NDE Company is a non-destructive evaluation company specializing in NDE, NDT, for industrial, aerospace, military and manufacturing businesses.

+1 203-262-6700Website
Aransas Pass, Texas4.4(7)

Through the excellence of our people and products, we provide specialized technical services to assess quality, verify standards and specification compliance, improve the performance, and extend the life of materials and processes for industries worldwide.

(985) 876-5559Website

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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