More than 15 years of commercial marine contracting experience and a workforce of over 300 skilled professionals define Philadelphia-based Seven Seas International LLC. The company supports shipbuilders and industrial clients with coordinated project execution, including new construction and vessel retrofits, while maintaining compliance with OSHA and USCG standards. Its Chennai branch, opened in December 2023, extends the company’s shipbuilding and repair work into India and the broader Asian market.
ISO 9001
ISO 45001
Hanwha Philly Shipyard, IncFounded in 1997, Hanwha Philly Shipyard, Inc. builds and sustains commercial and government vessels at Philadelphia’s historic Navy Yard. Since 2000, it has delivered nearly half of the large ocean-going Jones Act vessels built in the United States, and its work now includes the National Security Multi-Mission Vessel program. As part of Hanwha Group, the shipyard combines its U.S. workforce and facilities with Hanwha’s global shipbuilding expertise.PHILADELPHIA, PA
Delphinus EngineeringFounded in 1994, Delphinus Engineering grew from a small professional-services company into a federal and defense contractor supporting more than 700 professional and technical personnel. Its work brings together marine engineering and ship repair with cyber operations and security, serving government customers from offices across the East, West and Pacific coasts. Delphinus is also a successful graduate of the Small Business Administration’s 8(a) program, and its marine engineering and services operations hold quality systems recognized to ISO 9001:2015 requirements.NEWTOWN SQUARE, PA
Reliability and Performance Technologies LLC (R&P)Privately owned since its founding in 2000, Dublin, Pennsylvania-based Reliability and Performance Technologies LLC has built its identity around solving difficult problems for the U.S. Navy and commercial maritime customers. Its work centers on naval shipbuilding support, with the company applying specialized engineering knowledge to complex maritime programs. R&P operates under an ISO 9001:2015-certified, NAVSEA-approved quality system and received the 2024 HIRE Vets Platinum Medallion Award.DUBLIN, PA
Phoenix International Holdings, IncFounded in 1997 by six underwater operations experts to repair U.S. Navy ships, Phoenix International Holdings now provides manned and unmanned underwater services and engineering for commercial and government clients worldwide. The employee-owned company operates from eight U.S. offices and combines commercial diving with deepwater robotics, including in-house-designed vehicles capable of working to 6,000 meters. Phoenix’s quality system is certified to ISO 9001:2015 across its locations and lines of business.LARGO, MD