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

Sonora, California4.0(4)

Industrial Inspection & Analysis (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth of industrial sectors and geographies.

+1 833-777-8660Website
Alpharetta, Georgia2.6(5)

Industrial Inspection & Analysis (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth of industrial sectors and geographies.

+1 470-552-8301Website
Alachua, Florida4.3(3)

Get reliable wireless EMC testing services at IIA. Ensure your products meet regulatory standards for electromagnetic compatibility.

+1 352-472-5500Website
Bixby, Oklahoma5.0(5)

I2C is an inspection and metallurgical engineering firm that provides inspection support, mechanical integrity analysis, and failure analysis to a variety of industries.

+1 918-805-0074Website
Vancouver, Washington5.0(1)

Specializing in: CWI Welding Inspection, ASNT NDT / NDE, MT, UT, PT, and VT. Over-head crane inspection & repair. Industrial Electrical and I&C Services.

+1 360-200-1996Website
Monroe, Michigan3.9(11)

ISO-certified inspection, cleaning, assembly, machining, and engineering services for automotive and industrial manufacturers across the U.S.

+1 734-242-9935Website
Casper, Wyoming4.0

IMCI, a Cogent company, is one of 12 best-in-class partner companies providing pumping and process equipment solutions and service to the Oil & Gas, Petrochemical, Water and Wastewater treatment industries.

+1 307-237-0919Website
Anderson, South Carolina4.9(19)

We offer a variety of repair services. At Industrial Motor Service we remanufacture and sell AC and DC motors, pumps, gearboxes, gear reducers and more! | Just need a replacement? We are a distributor for the best manufacturers.

+1 864-226-2893Website
Pittsburgh, Pennsylvania4.5(2)

Industrial Testing Laboratory Services (ITLS) and engineering services group offers materials testing, chemical analysis, and other specialized testing.

+1 412-963-1900Website
St Joseph, Missouri

Ultrasonic Testing Weld Inspection Magnetic Particle Testing Liquid Penetrant Testing

+1 816-262-8248Website
El Paso, Texas5.0(1)

NDT Servicing El Paso, TX, Oil and Gas, Refineries, Power Generation, and Process Facility welding inspection needs. Call 915-221-1900

+1 915-221-1900Website
Decatur, Alabama

Non-destructive testing and advanced inspection services.

+1 256-986-0395Website
Texas City, Texas

Providing pipeline integrity support to clientele utilizing highly qualified integrity specialists certified in NDT Level II, NDT Level III, AWS CWI, etc

Website

NonDestructive Testing company with 5 offices located in Seattle, Portland, Oakland, Los Angeles, San Diego, and Houston providing RT (X-Ray & Gamma), UTT, UTSW, MT, PT, VT, GPR, PMI, HT, and LT to Fabrication, Marine, and Construction industries. Our technicians work both local and international jobs in the Marine industry. Seeking entry level and experienced Level II technicians in RT, UT, MT, PT seeking a career in NDT.

Website
Beresford, South Dakota

Irwin Industrial offers expert industrial inspection, consulting, and testing services to ensure safety and quality in your projects.

+1 605-743-4459Website
Jonesville, Michigan5.0(5)

Become a champion in the maritime industry! Empower your journey through our insights into Marine Repair & Shipbuilding. Navigate success now!

+1 517-995-4524Website

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.

Ready to get quotes?

Request a Quote