NEWTOWN SQUARE, PA — Delphinus Engineering has combined with Professional Analysis LLC, expanding its U.S. Navy and Marine Corps contracting capabilities into military logistics and supply chain management as private equity-backed consolidation continues within the naval maintenance and sustainment sector.
The transaction brings Alexandria, Virginia-based Professional Analysis, known as PAI, into Delphinus, a provider of engineering, maintenance, modernization and industrial services to the Navy and maritime defense industry. Delphinus is backed by Bluestone Investment Partners, which acquired an interest in the company in July 2026.
The combination broadens Delphinus’ operations beyond ship maintenance and modernization to include materials management, spare parts planning, equipment configuration and logistics support, integrating services that support naval vessels throughout their operational lives.
PAI, founded in 2003, employs more than 200 people supporting military customers across the United States and overseas. Its work includes logistics and sustainment programs for the Navy, Marine Corps and other defense organizations.
The company provides spare parts planning and configuration management for new ship construction, along with program support for Naval Sea Systems Command, Naval Facilities Engineering Systems Command, Naval Supply Systems Command and Military Sealift Command.
Its customer base also includes Marine Corps Logistics Command and the Air Force Special Warfare Distribution Center.
The acquisition aligns with Bluestone’s strategy of expanding Delphinus through investments in technical capabilities, workforce development and acquisitions focused on naval sustainment.
“Bluestone partnered with Delphinus in July 2026 to build a leading naval maintenance, modernization and sustainment platform through investment in its workforce, technical capabilities and strategic acquisitions,” said Kevin Doherty, a principal at Bluestone Investment Partners.
Doherty said PAI advances that strategy by connecting ship maintenance and modernization operations with the logistics and supply chain services required to maintain fleet readiness.
For Delphinus, the combination creates an opportunity to provide military customers with engineering, equipment maintenance and logistics services through a single contractor, potentially simplifying coordination between shipyard operations and supply systems.
“The combination expands our ability to support the Navy and Marine Corps across engineering, maintenance, modernization, and logistics,” Delphinus Chief Executive Officer Roby Lentz said.
PAI Chief Executive Officer Stephen Mellis said the combination would give the company’s workforce access to additional technical resources while broadening the services available to military customers.
“Together, we are bigger than the sum of our individual parts, as our team gains deeper technical resources and opportunities to grow with the fleet, while also giving our customers a single partner that can support them from the waterfront through the supply chain,” Mellis said.
The transaction represents another step in Bluestone’s effort to establish Delphinus as a broader naval sustainment contractor, combining technical maintenance capabilities with the logistical support required to keep military vessels and equipment operational.
WISTLR served as exclusive financial adviser to PAI in the transaction.
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