COLONNA'S SHIPYARD INC

Colonna’s Shipyard Inc. specializes in the precision fabrication, inspection, and overhaul of critical marine propulsion components for U.S. naval and maritime vessels. Their core capabilities center on the manufacturing and maintenance of stern shafts, propeller shafts, and intermediate shaft assemblies for high-value warships including LHD, LHA, LPD, and DDG classes. The contractor demonstrates deep technical expertise in shaft alignment, metallurgical inspection, and non-destructive testing protocols required for mission-critical propulsion systems. Their work includes open, inspect, and report (OIR) procedures for 270-foot tail shaft assemblies, indicating proficiency in complex disassembly, condition assessment, and overhaul readiness evaluations under strict naval specifications. This focus on propulsion integrity—particularly for large-diameter, high-torque drivetrain components—positions them as a specialized niche provider within the naval industrial base. The company maintains a consistent relationship with the Department of Defense, delivering essential shaft components and maintenance services for surface combatants and amphibious assault ships. They also support the Department of Homeland Security with similar shaft inspection and readiness tasks, suggesting alignment with Coast Guard or maritime security vessel sustainment programs. Their work is exclusively defense and maritime-focused, with no evidence of commercial or civilian sector activity. Operating under NAICS 336611, Colonna’s Shipyard Inc. is firmly embedded in the shipbuilding and repair sector, with a narrow vertical specialization in propulsion shaft systems rather than full vessel construction. Their market positioning is that of a high-precision subcontractor serving naval shipyards and system integrators requiring certified, mission-essential drivetrain components. Based in Norfolk, Virginia, the company operates as a small business (2L entity) with no federal certifications on record. Their geographic proximity to major naval infrastructure enhances responsiveness to fleet maintenance cycles and shipyard schedules.