Company: Donjon Marine Co., Tallvine Partners
Business Type: Marine Services
UK & International Business Sales and M&A News
Independent investment advisor Tallvine Partners has acquired Donjon Marine Co., a critical US marine infrastructure platform, marking the creation of Tallvine’s third platform and the establishment of its North American marine infrastructure strategy.
Donjon Marine was founded in 1964 by J. Arnold Witte and specialises in marine infrastructure with a comprehensive suite of essential solutions for the operation and maintenance of North America’s waterways, coastal regions, and harbour infrastructure. With its HQ in Hillside, New Jersey, and with operations across the U.S., it offers dredging, heavy lift, towing, marine demolition, diving, and other critical marine infrastructure solutions, with salvage operations spanning the globe.
With a fleet of more than 70 specialised vessels, over 1,000 linear feet of berth space, and an estimated daily spoils processing capacity of 4,500 cubic yards in the New York and New Jersey harbours, Donjon Marine and its team of over 270 employees specialise in maintaining navigable waterways and accessible harbour infrastructure, responding to maritime emergencies, and delivering complex infrastructure projects across the U.S. and abroad.
Donjon Marine also operates a shipyard in the Great Lakes, equipped with a 1,250 feet by 120 feet by 22 feet (depth over sill) dry dock and has more than 200,000 square feet of production area on 44 acres of land.
The company will continue to operate under the Donjon Marine brand and John A. Witte, Jr. will continue to lead the business as CEO, alongside Thomas and Paul Witte, as part of the platform’s executive team. In addition, Thoroughbred LLC., led by Co-Founders and Managing Partners Charles Wesley and Aaron Bowlds, will serve as industrial partner in the platform.
John A. Witte, Jr said:
“This is a truly transformative moment for Donjon Marine, and I am thrilled and honored to continue leading the platform.
“With a shared commitment to long-term investment, strategic growth, and innovation, we are poised to build upon Donjon Marine’s proud legacy, expand our reach, and continue to provide the highest level of service to our clients while seizing exciting new opportunities in the marine industry.”
John A. Witte, Jr - CEO of Donjon Marine Co.
Tallvine Partners is an independent investment advisor focused on investing in value-add middle-market infrastructure opportunities. Based in Miami, FL, Tallvine focuses on middle-market infrastructure opportunities across the energy and utilities, transportation and logistics, and communications sectors in North America.
Thomas Lefebvre, Partner & CEO of Tallvine Partners, commented:
“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. We 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.”
Thomas Lefebvre – Partner & CEO of Tallvine Partners
Victor Sosa, Partner at Tallvine Partners, added:
“We view this acquisition and partnership as a highly compelling opportunity to build a leading marine infrastructure platform across North America. We 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 our fleet, and executing strategic acquisitions in the sector.”
Victor Sosa – Partner at Tallvine Partners
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