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Tallvine Partners Acquired Donjon Marine to Expand Marine Infrastructure Portfolio

23 Sep, 2025 - by CMI | Category : Industrial Automation and Machinery

Tallvine Partners Acquired Donjon Marine to Expand Marine Infrastructure Portfolio

Tallvine Partners, an investment firm based in Coral Gables, Florida, announced that it has acquired Donjon Marine Co. LLC, a marine services company headquartered in Hillside, New Jersey, with operations across the United States. The financial terms of the acquisition were not disclosed.

Founded in 1964, Donjon Marine performs dredging, salvage, emergency response, heavy lift, towing, and environmental remediation.

The company operates a fleet of more than 70 vessels, including various ships, along with over 1,000 linear feet of berth space and a daily spoils processing capacity of 4,500 cubic yards in the New York and New Jersey harbors.

The company operates a shipyard in the Great Lakes with a 1,250' drydock and over 200,000 square feet of production space on 44 acres. Donjon Marine employs more than 270 people and will continue to operate under its existing brand.

Executive Statement

According to Thomas Lefebvre, partner and CEO of Tallvine Partners, the launch of our marine infrastructure platform and acquisition of Donjon Marine underscore our commitment to investing in resilient, essential infrastructure that supports global commerce, advances environmental stewardship, and delivers stable, recurring cash flows. With its long-standing reputation for safety, excellence, and service, Donjon Marine is an ideal cornerstone for this platform. They are thrilled to partner with the Witte family and Donjon Marine’s executive team, world-class leaders in the marine sector, to drive the platform’s growth together.

According to Victor Sosa, partner at Tallvine Partners, they view this acquisition and partnership as a highly compelling opportunity to build a leading marine infrastructure platform across North America. They look forward to working closely with the team to pursue exciting initiatives, including expanding our geographic reach and service offerings, driving the growth and modernization of their fleet, and executing strategic acquisitions in the sector.

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