Groton's Defense Identity
Southeastern Connecticut doesn't look like a major defense hub from the outside. But Groton is one of the most strategically important defense communities in the country. This is where the United States builds its attack and ballistic missile submarines — a capability so critical that it sits at the top of the Navy's acquisition priorities.
General Dynamics Electric Boat has been building submarines in Groton since World War I. Today EB is simultaneously executing the Virginia-class attack submarine program and ramping up production for the Columbia-class ballistic missile submarine — a program so important it cannot be allowed to fail. The workforce numbers in the tens of thousands, and the supply chain behind it spans hundreds of small and mid-sized companies across southeastern Connecticut, Rhode Island, and beyond.
If you supply anything to Electric Boat — precision machined parts, specialty materials, electronics assemblies, engineering services, IT systems, facilities support — you're in a CMMC environment. And EB is moving aggressively to enforce it.
The EB shipyard is the heart of Groton's defense economy. The surrounding area hosts scores of EB suppliers, specialty manufacturers, and engineering firms that depend on submarine programs for most or all of their revenue.
The Navy's primary East Coast submarine base. Home to the Naval Submarine School, submarine squadrons, and a significant supporting contractor community providing maintenance, IT, logistics, and specialized services.
Precision manufacturers, composites suppliers, and specialty material firms spread along the Thames and Shetucket river corridors — many with EB prime contracts or sub-tier positions in the submarine supply chain.
Engineering services firms, defense technology companies, and specialized contractors supporting EB programs and the submarine base with systems engineering, software, and technical support.
Columbia-class is the Navy's number one acquisition priority. Electric Boat cannot afford supply chain disruptions. If you can't demonstrate CMMC compliance, you won't be on the Columbia supply chain — it's that simple.
The free readiness check tells you whether you need Level 1 or Level 2, what gaps you likely have, and what it'll cost to get there. Get ahead of EB's next compliance review.
Take the Free Readiness Check →Electric Boat and the Submarine Supply Chain
General Dynamics Electric Boat is the dominant defense employer in southeastern Connecticut — and their CMMC requirements flow directly to every sub-tier supplier. Here's what the supply chain looks like and why compliance pressure is intensifying:
- General Dynamics Electric Boat — Prime contractor for Virginia-class (attack) and Columbia-class (SSBN) submarines. Headquarters in Groton. Building the most strategically important naval vessels in the US fleet. Their supply chain DFARS clauses require CMMC compliance from all suppliers handling CUI.
- Naval Submarine Base New London — The Navy's primary East Coast sub base drives significant maintenance, IT, and support contracting. SUBASE contractors handle operational CUI and are subject to CMMC requirements.
- Huntington Ingalls Industries (HII) — EB partner on Columbia-class and a presence in the broader submarine industrial base. HII's compliance requirements mirror EB's.
- L3Harris Technologies — Defense electronics for submarine systems. Significant supply chain in the region.
- Precision manufacturers, composites suppliers, specialty material firms — Hundreds of smaller companies throughout southeastern CT that supply components, assemblies, and materials to EB and other submarine system primes.
The key dynamic: EB is under enormous pressure to deliver Virginia-class boats on schedule while simultaneously ramping Columbia-class production. Any supply chain weakness — including a supplier who can't demonstrate CUI protection — is an unacceptable risk. EB has been explicit with suppliers: CMMC compliance is a condition of continued business.
Why CUI Is Everywhere in the Sub Supply Chain
Some defense supply chains have CUI in certain contracts and not others. The submarine supply chain is different. Technical data for submarine components is almost always CUI — because the performance characteristics, materials, tolerances, and assembly procedures for submarine systems are themselves sensitive information.
If you receive technical drawings from EB, you're receiving CUI. If you receive specifications, you're receiving CUI. If you send EB test reports, certifications of conformance, or process documentation, you're generating CUI. This means essentially every supplier doing real technical work in the submarine supply chain needs CMMC Level 2 — not Level 1.
The good news: most Groton-area suppliers are sophisticated manufacturers who already have reasonable security practices. The gap for most is documentation — proving to a C3PAO that their existing practices meet NIST 800-171 requirements. That's a solvable problem, and it's where good preparation pays off.
Your compliance package is built from your actual environment — shop floor systems, CNC machines on a network, manufacturing CUI flows — and verified by practitioners who understand how to scope a manufacturing environment properly.
Take the Free Readiness Check →Connecticut Resources for CMMC
Connecticut's procurement assistance network — formerly CT PTAC. Provides free guidance on CMMC requirements, government contracting basics, and regional compliance resources. Advisors in the southeastern CT region understand the EB supply chain specifically. A good starting point before you engage a private consultant.
Connecticut's Manufacturing Extension Partnership center. CONNSTEP offers CMMC gap assessments, cybersecurity workshops, and connections to vetted consultants who understand the manufacturing environment. Their services are subsidized — significantly more affordable than private consulting for small manufacturers in the EB supply chain.
EB actively works with key suppliers on supply chain development, including compliance readiness. If you're an existing EB supplier, check with your EB program contact about available guidance and timelines. EB has a vested interest in helping their critical suppliers get to compliance — they just can't wait forever.
What Groton Contractors Should Do Now
If you're in the Electric Boat supply chain and haven't started your CMMC compliance program, here's the sequence that works for most small manufacturers in Groton:
Step 1: Scope your environment. Identify every system, network, and person that touches CUI — technical drawings, specs, test data. This is where most manufacturers waste time if they do it wrong. Get a consultant to help. A well-scoped environment can reduce the compliance work significantly.
Step 2: Run a gap assessment. Compare your current practices against the 110 controls in NIST 800-171. CONNSTEP can help with this at subsidized rates. You need to know what you're fixing before you can fix it.
Step 3: Build your System Security Plan. The SSP is your documented proof that you understand and manage your security environment. It's required for CMMC Level 2 assessment. This is where AI-assisted tools like MyCMMC's platform can cut months of documentation work.
Step 4: Close your gaps and book a C3PAO. C3PAO assessment slots in the Northeast book out fast. Book your assessment slot early — before you've finished remediation if necessary — so you have a fixed target date.
See the full cost breakdown to understand what CMMC Level 2 certification will run for a company your size.
Frequently Asked Questions
Not automatically — it depends on whether your work involves CUI. But virtually all technical work in the submarine supply chain does. If you handle technical drawings, specifications, design data, or test procedures for submarine components, you're handling CUI and need Level 2.
Connecticut APEX Accelerator is a state-funded procurement assistance program that helps small businesses navigate government contracting requirements including CMMC. They have advisors familiar with the EB supply chain and can provide free initial guidance and connections to regional consultants.
Columbia-class is the Navy's number one acquisition priority — a ballistic missile submarine program costing over $100 billion. EB cannot afford supply chain disruptions on this program. They're pulling non-compliant suppliers from their qualified manufacturer lists. Non-compliance means losing your position in the most important shipbuilding program of the next 30 years.
CONNSTEP is Connecticut's Manufacturing Extension Partnership center. They offer CMMC gap assessments, cybersecurity workshops, and connections to vetted CMMC consultants who understand manufacturing environments. Their subsidized programs are significantly more affordable than private consulting — a natural starting point for small manufacturers before engaging a C3PAO.
Identify every system, network, and person that touches CUI — technical drawings, specs, test data. A well-scoped environment can significantly reduce the number of NIST 800-171 controls that apply to your company. A CMMC consultant with manufacturing experience can often scope a small shop in a day.
Get Your C3PAO-Ready Documentation — Built for the Groton Submarine Supply Chain
Take the free readiness check and get a complete compliance package built from your actual environment and verified by practitioners who understand the submarine manufacturing supply chain.
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