Atlantis NDT delivers ASNT and ISO 9712 aligned NDT training in Groton: Level I, Level II and Level III programmes across ultrasonic, radiographic, magnetic particle, penetrant, eddy current and visual testing, plus API 510, API 570 and API 653 inspector preparation. Courses are authored and supervised by ASNT NDT Level III professionals.
The Groton inspection market
Groton is the submarine-shipbuilding home of General Dynamics Electric Boat, which in July 2026 won the largest contract in its 127-year history — $76.6B covering nine Virginia-class attack submarines and five Columbia-class ballistic-missile submarines — and is hiring toward 8,000 new employees (more than 4,000 already added in 2026), with a further $5B allocated to renovate the Groton shipyard itself. Naval Submarine Base New London, the US Navy's primary East Coast submarine base, sits directly across the Thames River in Groton and adds a second concentration of naval nuclear-adjacent technical work. Structural, weld and radiographic inspection under Navy nuclear-submarine procedures drives sustained Level II/III demand.
Certifications most in demand in Groton
Primary: ASNT. Secondary: ISO 9712.
Exam centres and practical facilities
Acuren New London / Groton (ASNT)
MISTRAS Group New London (ASNT)
Recommended certification pathway
Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI.
Delivery formats
Classroom cohorts with supervised practical hours logged to SNT-TC-1A requirements.
On-site corporate training at your facility using your equipment and specimens.
Blended online theory through Atlantis LMS with in-person practical assessment.
NDT training across USA
Atlantis NDT also runs training programmes in these nearby markets:
Atlantis NDT runs ASNT and ISO 9712 programmes for candidates in Groton, USA, delivered as in-person classroom, on-site corporate cohorts at your facility, and blended online theory with supervised practical. Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI.
Which certification should an inspector in Groton take first?
Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI.
Does Atlantis run corporate on-site NDT training in Groton?
Yes — on-site cohorts are run at client facilities in and around Groton for groups, including method-specific practical sessions using your own equipment and specimens so the training maps to the work your crews actually do. Written practice review and Level III oversight can be bundled with the programme.
Groton is the submarine-shipbuilding home of General Dynamics Electric Boat, which in July 2026 won the largest contract in its 127-year history — $76. Training runs on ASNT and ISO 9712 certification, delivered on-site, at arranged venues, or blended.
6B covering nine Virginia-class attack submarines and five Columbia-class ballistic-missile submarines — and is hiring toward 8,000 new employees (more than 4,000 already added in 2026), with a further $5B allocated to renovate the Groton shipyard itself. Naval Submarine Base New London, the US Navy's primary East Coast submarine base, sits directly across the Thames River in Groton and adds a second concentration of naval nuclear-adjacent technical work. Structural, weld and radiographic inspection under Navy nuclear-submarine procedures drives sustained Level II/III demand. Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI. Examinations are administered locally through Acuren New London / Groton.
Source: ASNT SNT-TC-1A (2024 edition); local market data per city research file
NDT training and certification in Groton — route, pay and delivery
Factor
This market
What it means
Certification route
ASNT, ISO 9712
Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI.
Level I pay band
—
Entry: performs set-ups and records results under supervision
Level II pay band
—
Interprets and reports to an approved procedure
Level III pay band
—
Approves procedures and qualifies personnel
Examination centre
Acuren New London / Groton; MISTRAS Group New London
No fixed schoolhouse; the model follows the cohort
Which NDT certification do employers in Groton ask for?
ASNT leads this market, with ISO 9712 also recognised. Electric Boat qualifies personnel under ASNT SNT-TC-1A combined with NAVSEA 250-1500-1 and Navy nuclear-submarine-specific weld and NDT procedures. Roles supporting Columbia-class and Virginia-class hull work typically require a DoD security clearance, and Level III sign-off follows ASME Section III (nuclear) in addition to Section XI.
What does an NDT technician earn in Groton?
Level I sits at the local entry band, Level II at the local qualified band, and Level III at the senior band. Certification level moves pay more than any other factor; method premiums stack on top.
Where are NDT certification exams administered near Groton?
Acuren New London / Groton and MISTRAS Group New London administer ASNT examinations for this market. Employer-certified schemes also allow examinations at the employer's own facility under an approving Level III.
How is NDT training delivered in Groton?
Three routes: on-site at the employer's facility with the employer's own equipment, an arranged venue when a cohort forms, or blended — online theory on the technician's schedule followed by a concentrated in-person practical. The practical cannot be done remotely under any recognised scheme.
Ask about NDT training dates and delivery
Tell us the methods and levels you need and how many technicians. We reply with available dates, the delivery options that fit, and what your written practice requires — usually the same working day.
Groton builds submarines. Electric Boat's yard on the Thames is the region's industrial centre, and the naval submarine base sits across the river.
Submarine construction carries the most demanding weld-examination regime in shipbuilding — pressure-hull work under naval technical requirements, with procedure qualification, personnel approval and record-keeping standards well beyond commercial practice.
Which methods matter most here
UT and RT on hull and pressure-boundary welds, MT and PT on the surface scope, with VT discipline throughout. A candidate certifying against what Groton employers actually examine becomes employable considerably sooner than one spreading thinly across every method.
The levels, and what each one means to an employer
Level I performs calibrations and examinations under supervision — the entry point, usually in one method first. Level II sets up the technique, interprets against the code and signs the report; this is the level contracts in Groton actually specify. Level III writes and approves procedures and qualifies the Level I and II personnel — the authority a growing inspection function must either employ or engage. Progression requires training hours and documented experience hours, so someone already working under supervision advances faster than a cold start.
We are direct about the model: Atlantis does not operate a walk-in training centre in Groton. Corporate programmes are delivered on-site at your facility — usually the better arrangement anyway, because the practical specimens can match the equipment your people actually examine rather than generic training coupons. Individuals are served through scheduled cohorts or blended delivery combining online theory with supervised practical work. Tell us headcount, methods and timing and we will say plainly which route fits, including when a local provider is the honest answer for a single candidate.