What General Dynamics Bath Iron Works does

General Dynamics Bath Iron Works (BIW) is a full-service naval shipyard located in Bath, Maine, founded in 1884 and operating as a wholly-owned subsidiary of General Dynamics Corporation since 1995. The company designs, constructs, and provides lifecycle support for advanced surface combatants delivered exclusively to the U.S. Navy, with a 140-year track record spanning over 430 shipbuilding contracts and 260+ military vessels delivered. BIW serves as the lead construction yard for the DDG 51 Arleigh Burke-class destroyer program — the most successful surface combatant program in U.S. Navy post-WWII history — and was the sole builder of the three Zumwalt-class (DDG 1000) destroyers. The company employs between 5,001 and 10,000 workers (down from a 12,000-employee WWII peak) across its Bath and Brunswick, Maine facilities and homeport operations in Norfolk, Mayport, San Diego, Everett, Pearl Harbor, Yokosuka (Japan), and Rota (Spain).

BIW's core technology centers on modular naval ship construction using proprietary facilities including the Land Level Transfer Facility (LLTF, completed 2001), a 77,000-square-foot Ultra Hall climate-controlled assembly facility (opened 2008) capable of handling ship sections up to 4,000 tons, a 750-foot dry dock, and three shipways accommodating hulls up to 780 feet. The company integrates the Navy's Aegis Combat System into Arleigh Burke-class destroyers and applies OpEx and Lean Manufacturing practices to shipbuilding workflows. The firm is ISO 14001- and ISO 45001-certified, was the first private U.S. shipyard to achieve both certifications, and operates a Surface Ship Support Center (SSSC) providing worldwide fleet logistics, engineering, and a parts inventory exceeding 50,000 line items.

The business model is direct government contracting — BIW sells ships and lifecycle services to the U.S. Navy exclusively, with no commercial or export customers, through multi-year sole-source and competitive-bid defense contracts whose pricing terms are classified. Revenue is generated through three streams: new-construction ship sales, lifecycle support and modernization services through the SSSC, and aftermarket parts and equipment. The company reported $2.5 billion in economic output in 2023 (including $117 million spent with Maine suppliers), while contributing $2 billion to Maine's Sagadahoc-Cumberland regional economy. BIW does not publicly disclose revenue as a private subsidiary.

Name

General Dynamics Bath Iron Works

Legal name

General Dynamics Bath Iron Works

Website

https://gdbiw.com

Company type

Private

Founded year

1884

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

General Dynamics Bath Iron Works is a Maine-based naval shipyard and wholly-owned subsidiary of General Dynamics that designs, builds, and supports surface combatants — primarily Arleigh Burke-class and Zumwalt-class destroyers — exclusively for the U.S. Navy.

Ownership category

akta.pro rank

Product category

Naval Shipbuilding (Surface Combatants)

NAICS

Ship Building and Repairing (336611), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Ship and Boat Building (33661)

SIC

Ship & Boat Building & Repairing (3730), Search, Detection, Navagation, Guidance, Aeronautical Sys (3812)

akta.pro primary industry

Surface Combatants (Destroyers, Frigates, Corvettes) (IMAJABAA)

akta.pro secondary industry

Combat & Auxiliary Naval Vessel Systems (IMABAKAA)

Keywords

• Naval shipbuilding
• Surface combatant design
• Guided missile destroyer construction
• Naval vessel lifecycle support
• Naval engineering services

Headquarters

HQ city

Bath

HQ country

United States

HQ region

North America

Offices17 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Infrastructure, Operations, Technology or R&D

Revenue model

1. Naval Ship Construction: Primary revenue from designing and building complex surface combatants for the U.S. Navy. Revenue is generated through defense contracts with the Department of Defense, primarily for Arleigh Burke-class and Zumwalt-class destroyers. Government defense contracting model with long production cycles and multi-year program commitments.
2. Surface Ship Lifecycle Support: Maintenance, modernization, and lifecycle support services for Navy ships. Includes engineering, logistics, parts supply, and operational support through the Surface Ship Support Center (SSSC) for ships at various homeports worldwide.
3. Aftermarket Parts and Equipment: Sale of spare parts and equipment for naval vessels. Stocks over 50,000 separate parts and sources 75,000 other items for specific shipboard construction and support requirements.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

General Dynamics Bath Iron Works designs, builds, and provides lifecycle support for advanced surface combatant ships for the U.S. Navy, including Arleigh Burke-class (DDG 51) guided missile destroyers and Zumwalt-class (DDG 1000) destroyers. It also delivers ship design, engineering, manufacturing, and after-market parts and homeport support services to maintain fleet operational readiness worldwide.

Product overview

General Dynamics Bath Iron Works is a full-service shipyard specializing in the design, construction, and lifecycle support of complex surface combatants for the U.S. Navy. The company's core products include the Arleigh Burke-Class Destroyers (DDG 51) — the workhorse of the fleet and the most successful surface shipbuilding program in post-WWII history — and the Zumwalt-Class Destroyers (DDG 1000), the world's most technologically advanced surface combatants. Supporting these construction programs, BIW offers the Surface Ship Support Center (SSSC) providing engineering, logistics, and parts services to keep the fleet operational worldwide. The company also provides comprehensive ship design & engineering services and manufacturing through its Maine facilities, operating the Land Level Transfer Facility and Ultra Hall for modular ship construction.

Differentiator

Problem solved

Functional benefit

Products and services

• Arleigh Burke-Class Destroyers (DDG 51) Guided missile destroyers serving as the workhorse of the U.S. Navy fleet. BIW is the lead shipyard for DDG 51 construction, with ships operating independently or as part of carrier strike groups, surface action groups, and amphibious readiness groups, providing multi-mission capabilities in air, surface, and subsurface environments.
• Zumwalt-Class Destroyers (DDG 1000) The largest and most technologically advanced surface combatant in the world. BIW built all three Zumwalt-class destroyers (Zumwalt, Michael Monsoor, Lyndon B. Johnson), capable of deterrence, sea control, power projection, and command and control missions while allowing the Navy to evolve with new systems and missions.
• Surface Ship Support Center (SSSC) Lifecycle support services for the U.S. Navy fleet worldwide, providing engineering and logistics solutions that increase fleet operational readiness and reduce total ownership cost. Services include engineering and design, material fabrication, material procurement/kitting, availability planning, on-site support, class configuration management, data management, and integrated logistics support.
• Ship Design & Engineering Full array of naval architecture and engineering services including concept design, detail design, and manufacturing support. BIW is the nation's premier naval combatant design agent and the largest design and engineering firm north of Boston.
• Ship Manufacturing State-of-the-art shipbuilding using modular construction techniques. Facilities include a 170,000 sq ft structural assembly building, 90,000 sq ft Pre-Outfit Building, 77,000 sq ft Ultra Hall for assembling ship sections up to 4,000 tons, a 750-foot dry dock, three shipways, and the Land Level Transfer Facility (LLTF) with 300-ton level-luffing cranes.
• After-Market Parts and Equipment Sales Spare parts and equipment supply service stocking over 50,000 separate parts and sourcing 75,000 additional items for specific shipboard construction and support requirements, with over 12,000 items conforming to National Stock Numbers. Provides technical service worldwide for scheduled or emergency fleet needs.
• Homeport Operations (Fleet Support) On-site fleet support operations at multiple Navy homeports including Norfolk, Mayport, Pascagoula, San Diego, Everett, Pearl Harbor, Yokosuka (Japan), and Rota (Spain), providing planning yard and direct fleet support to deployed and homeported vessels.

Quantifiable outcome

• 43 Arleigh Burke-class destroyers built at Bath shipyard
• +4 more outcomes

Named customers4 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Southern Maine Community College (SMCC)coreStrategic or Co-development Partner · 2 March 2026Partnership with Southern Maine Community College for manufacturing technician training program. The free, three-week program covers shop safety, welding, blueprint reading, and other manufacturing skills with a $500 per week stipend. Has achieved 93% retention rate with graduates guaranteed an interview at BIW. The 100th class launched in March 2026.
• Central Maine Community College (CMCC)coreStrategic or Co-development Partner · 2 March 2026Partnership with Central Maine Community College in Auburn to expand the manufacturing technician training program after eight years of success at SMCC. Expansion aimed at giving workers in central Maine better access to shipbuilding career opportunities. CMCC has already graduated 29 students with 22 receiving job offers.
• City of BathcoreStrategic or Co-development PartnerLong-term capital investment partnership with the City of Bath supporting Land Level Transfer Facility and other shipyard modernization projects.
• State of MainecoreStrategic or Co-development PartnerPartnership with the State of Maine supporting shipyard modernization and workforce development initiatives.
• Maine Department of TransportationminorGTM or Marketing PartnerPartnership with MaineDOT and Greater Portland Metro for Metro BREEZ commuter bus service between Portland and Bath for BIW employees.
• General Dynamics Marine SystemscoreOthersBath Iron Works is a wholly-owned subsidiary of General Dynamics Marine Systems, part of General Dynamics Corporation.

Scale indicators14 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Lockheed Martin: Major U.S. defense prime that supplies integrated combat systems (Aegis historically, SPY-7 radar) used on platforms BIW builds. An indirect adjacent peer via Navy systems integration rather than shipbuilding.
• Northrop Grumman: Major U.S. defense contractor serving the same Navy customer with shipboard systems, unmanned maritime systems, and carrier/aircraft integration — adjacent peer overlapping on naval defense programs.
• General Dynamics NASSCO: Sister subsidiary within General Dynamics that builds auxiliary and support ships (e.g., John Lewis-class T-AO, Expeditionary Sea Base). Same parent and same Navy customer, but focused on non-combatant auxiliary vessels.

Regional players

• ThyssenKrupp Marine Systems: One of Europe's leading naval shipbuilders (MEKO-class frigates, submarines). Comparable in naval shipbuilding expertise but operates primarily outside the U.S. market where BIW competes.
• Navantia: Spanish state-owned naval shipbuilder constructing F-110 Bonifaz-class frigates and other surface combatants. Comparable in warship construction expertise but focused on European and Spanish Navy markets.

Direct peers

• Fincantieri Marine Systems: Through Fincantieri Marinette Marine, builds Freedom-class littoral combat ships and Constellation-class guided-missile frigates for the U.S. Navy — competing with BIW for future surface combatant and frigate workloads.
• Austal USA: Builds Independence-class littoral combat ships and Expeditionary Fast Transport (EPF) vessels for the U.S. Navy. Competes with BIW in adjacent U.S. Navy surface ship programs.
• BAE Systems: Historically a major partner in the DDG-51 Arleigh Burke program (40% share until 2005). Continues to compete in U.S. naval shipbuilding via BAE Systems Ship Repair and other yards servicing the same U.S. Navy customer.
• Huntington Ingalls Industries: Ingalls Shipbuilding division is the other lead U.S. Navy surface combatant builder, sharing production of the Arleigh Burke-class DDG-51 program with BIW. Most directly comparable shipyard in scale, customer base, and product portfolio.

Others

• Raytheon Technologies (RTX): Supplies Tomahawk missiles, SPY-6 radar components, and other weapons/sensors that BIW integrates into DDG-51 destroyers. Functions as a key upstream supplier to BIW's products rather than a shipbuilder peer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gdbiw
• YouTubeyoutube.com/channel/UCPKRJGWbk0RlYGH3VdKB5YA
• Facebookfacebook.com/General-Dynamics-Bath-Iron-Works-324029434325609
• LinkedInlinkedin.com/company/bath-iron-works
• Instagraminstagram.com/gd_bathironworks

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about General Dynamics Bath Iron Works