About Submerged Construction LLC
A diver-led organization delivering innovative, safe, and reliable underwater construction solutions that protect and strengthen critical infrastructure throughout the Mid-Atlantic and Northeast.
Our Mission
Built Below the Surface. Built to Last.
SubCon delivers innovative, safe, and reliable underwater construction solutions that protect and strengthen critical infrastructure across the Mid-Atlantic and Northeast.
Diver-Led. Field-Proven.
We are a diver-led organization — every decision, every safety protocol, and every project plan is shaped by people who have worked underwater on real infrastructure. That field experience is built into how we operate.
Safety. Expertise. Execution.
We are committed to excellence across commercial diving, marine construction, underwater welding, and structural rehabilitation — delivered through uncompromising safety standards, technical depth, and responsive project management.
Built on Integrity.
We build lasting partnerships through integrity, professionalism, and accountability. Our purpose is straightforward: safeguard the infrastructure communities depend on — and do it right, every time.
Company Overview
Specialized Underwater Solutions for Critical Infrastructure
Submerged Construction LLC (SUBCON) is a specialized commercial diving and marine construction company providing safe, efficient, and cost-effective underwater solutions throughout the Mid-Atlantic and Northeast.
Our team of experienced commercial divers, welders, and marine construction professionals delivers high-quality results for the full range of critical infrastructure owners and operators — ports, power generation facilities, nuclear plants, industrial waterfronts, and government agencies.
We specialize in the work that matters most: pile encasements, bulkhead repair, and underwater welding — backed by decades of real-world experience in demanding underwater environments.
Every project is staffed by a union-certified crew, executed to the highest industry safety standards, and managed with the responsiveness that critical infrastructure schedules demand.
Core Services
- ▸ Bulkhead Repair
- ▸ Pile Encasements
- ▸ Underwater Welding & Burning
- ▸ Structural Steel Repair
- ▸ Marine Construction
- ▸ Underwater Inspection
- ▸ Salvage & Recovery
What We Do
Inland Commercial Diving & Marine Construction
SubCon's work happens beneath the surface — in rivers, harbors, reservoirs, and coastal marine environments — where specialized skills, proper equipment, and rigorous safety protocols are non-negotiable.
Underwater Welding & Burning
Certified wet and dry welding and cutting operations below the waterline for structural repairs, modifications, and removals on bridges, piers, and marine structures.
Bulkhead & Structural Steel Repair
Inspection, assessment, and repair of deteriorated or damaged subaqueous structural steel and bulkheads for bridges, dams, piers, and waterfront infrastructure.
Pile Encasements
Applying composite encasement systems to structural piles suffering from marine corrosion and deterioration — restoring structural integrity and extending service life.
Marine Construction
Comprehensive marine construction services including pier work, dock construction and repair, bulkhead installation, fender system installation, and waterfront projects.
Underwater Inspection
Visual and documented underwater inspections of bridges, dams, piers, pipelines, and other submerged infrastructure, with professional photo and video reporting.
Salvage & Recovery
Underwater salvage, object recovery, and emergency diving response across a wide range of underwater scenarios and client types.
Who We Serve
Critical Infrastructure Sectors
SubCon is built specifically for the organizations responsible for critical infrastructure — those who need a commercial diving and marine construction partner they can truly rely on.
Ports & Marine Terminals
Underwater repairs, inspections, and marine construction for ports, marine terminals, and waterfront facilities handling commercial freight and cargo.
Power Generation
Specialized underwater work for power generation facilities — including cooling water intake structures, outfall pipes, and submerged infrastructure maintenance.
Nuclear Facilities
Compliant, safety-first underwater operations for nuclear power plants and facilities requiring specialized dive teams with strict protocol adherence.
Industrial Waterfronts
Industrial facilities with water intake structures, outfall pipes, cooling systems, and submerged infrastructure requiring specialized underwater maintenance and repair.
Government & Municipal
Federal, state, and local government agencies and municipalities requiring bridge inspections, dam maintenance, water infrastructure work, and public waterfront improvements.
Critical Infrastructure
Any owner or operator of critical underwater or waterfront infrastructure who needs a proven, union-certified commercial diving partner with real-world expertise.
Why Choose SubCon
The Union Workforce Advantage
SubCon is a union commercial diving and marine construction company — and that distinction is a direct advantage to every client we serve. Our crews are among the most highly trained, highly skilled commercial divers and marine construction workers in the industry.
Trained to the Highest Standards
Every SubCon diver is trained through standardized union certification programs that set the benchmark for the commercial diving industry — covering underwater welding, structural work, rigging, hazardous environment diving, and emergency response. When a SubCon crew enters the water, the qualifications behind them are not in question.
Consistent Quality on Every Project
Union labor means a predictable, high-quality workforce on every job — consistent skill levels, consistent safety standards, and consistent accountability regardless of project size or site conditions. Owners and operators in critical infrastructure cannot afford surprises underwater. With SubCon, they never face them.
Compliance Built In
Many government contracts, federal projects, nuclear facility operations, and port authority engagements require union-certified labor. SubCon satisfies those requirements by default — no additional vetting, no delays, no compliance gaps. Your project stays on track from day one.
Uncompromising Safety
Every operation is executed with a documented dive plan, topside supervision, and emergency response procedures in place — because safety is not optional underwater.
Highly Trained Union Workforce
Our divers hold union certifications covering the full range of commercial diving disciplines — underwater construction, welding, structural repair, rigging, and hazardous environment operations. Every crew member meets those standards, every time.
Union Labor Compliance
Government contracts, regulated facilities, and port authority projects frequently require union-certified labor. SubCon qualifies by default — keeping your project compliant from contract to completion.
Technical Expertise
Our leadership team brings 75+ years of combined experience in commercial diving and marine construction — applied to every project we execute, from nuclear facilities to port terminals.
Responsive Execution
We mobilize quickly and execute reliably — providing efficient, cost-effective solutions to complex underwater challenges on your schedule, not ours.
Integrity & Accountability
We build lasting client partnerships by operating with integrity, professionalism, and full accountability — ensuring every project is completed safely, on time, and to the highest standard of quality.