Marine NDI

When it comes to Maritime, Aqualified offers Non-Destructive Inspection (NDI) for the Shipbuilding and Submarine industries and is Longshore insured. Our qualified level II and III inspectors are NAVSEA, NAS-410, SNT-TC-1A, ASNT, ACCP and CP-189 qualified & certified. Aqualified Marine NDI technicians use years of experience to evaluate the extent testing needed. We can perform testing on everything from ship hull steel welds, to Non-Destructive Testing (NDT) during new ship building. Our team of professionals will accommodate your needs.

Marine Fabrication

Aqualified can outsource your marine fabrication Non-Destructive Inspection (NDI) department, or assemble an in-service department of various shipyards. No matter where our team travels, we will meet all applicable codes and standards. We also provide support in NDT requirements, ship repairs, conversions, services and manufacturing. Common services requiring Non Destructive Inspections include:


  • Crane Booms
  • Cell guides
  • Tanks
  • High pressure pipe and tanks
  • Cargo hold damage
  • Boilers
  • Main deck repairs
  • Valve repairs
  • Ship preventative maintenance
  • Pipe systems carbon steel
  • Fabrication

Aqualified’s inspectors perform NDI on:

  • Cargo Ships
  • Tankers
  • Drilling Rigs
  • Destroyers
  • Power Barges
  • Tugs
  • Assault ships
  • Combat ships
  • Vessels
  • Submarines
  • Structures and more

Inspections include:

  • Piping
  • Structural fit-up
  • Final weld inspections
  • Ship hull steel welds for ship repair
  • New shipbuilding – ship design

Aqualified Qualifications


Submarine NDI requires special expertise. Our team of inspectors are primarily retired military personnel who have experience in nuclear environments, government, Department of Defense, technical orders, and procedures. Our NAVSEA T9074-AD-GIB-010/1688 and NAVSEA S9074-AR-GIB-010/278 Level II qualified inspectors are prepared for your NDI needs.They are all certified with NAVSEA T9074-AS-GIB-010/271 on a 3 year interval with annual eye exams and a 7 year SS trace. We are also JCP Joint certified for our Canadian friends. Testing methods used NDI Submarine inspections are listed below:

Visual testing is simply stated as looking at a component with your eyes. VT testing can be performed with flashlights, optical prisms, microscopes, comparators, borescopes & video probes.

Liquid penetrant also known as dye penetrant is a fluid usually used to find small openings at the surface of a material that is nonporous.

Magnetic particle inspection is used primarily to detect cracks on ferrous materials.

In the industrial sector record retention of x-rays is just as important as the inspection itself.

Ultrasound (UT) is also called ultrasonics, UT straight beam (longitudinal), UT shear wave, UT immersion testing, UT phased array and UTT for ultrasonic thickness.

Eddy Current (ET) is also called electromagnetic induction and can be broken up into four subgroups: AC Field Measurement, Flux Leakage, Remote Field and Eddy Current.

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