Gibbs & Cox (Leidos)
Sector: Marine Engineering
Region / State: Arlington, VA
Largest independent naval architecture and marine engineering firm in the US working on vessels from icebreakers to naval combatants.
Acquired by Leidos for $380 million in 2021; designed WWII Liberty ships
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Other Marine Engineering companies: Jackson Offshore Operators, JMS Naval Architects, NETSCo, Sea Engineering, Art Anderson Associates, Bay Engineering
Other companies in Virginia: Huntington Ingalls Industries (Newport News), Lyon Shipyard, Maersk Line Limited, Marine Contracting Corporation, Marine Spill Response Corporation, Military Sealift Command (MSC)