Lone Star Funds has completed the sale of Vigor Marine Group to Antin Infrastructure Partners, the US private sector shipbuilder and fabricator said in a report published on 18 August 2026 by MarineLink Maritime News.
The transaction was carried out by an affiliate of Lone Star Fund XI, L.P., which announced that control of Vigor has passed to Antin Infrastructure Partners in the completed deal. MarineLink provided the initial notice of the acquisition on 18 August 2026.
Based in Portland, Oregon, Vigor Marine Group operates shipyard and fabrication facilities across five locations. The group’s operations combine shipbuilding and heavy fabrication capacity across those sites.
The change of ownership transfers Vigor’s assets and business from Lone Star Funds to Antin Infrastructure Partners. The parties named in the MarineLink account were Lone Star Funds, the Lone Star Fund XI affiliate and Antin Infrastructure Partners.
The deal in brief
MarineLink’s report identifies the buyer as Antin Infrastructure Partners and the seller as an affiliate of Lone Star Fund XI, L.P. The announcement presents the transaction as a completed sale rather than an ongoing negotiation.
The company being sold, Vigor Marine Group, is described as a US-based shipbuilding and fabrication business with multiple facilities. The report places Vigor’s headquarters in Portland, Oregon, and notes the company’s multi-site footprint.
Operational footprint
Vigor’s five locations are presented in the report as shipyard and fabrication sites; the business combines both ship repair and industrial fabrication capabilities. The organisation’s facilities form the operational backbone that changed ownership in the transaction.
Antin Infrastructure Partners, a purchaser in the infrastructure investment sector, now holds Vigor Marine Group under its ownership following the completion of the sale.
The MarineLink item serves as the published record of the transaction on 18 August 2026 and furnishes the core facts: the seller, the buyer, the asset and its US base of operations. Further detail on financial terms, future management or operational plans was not part of the supplied summary.
The transfer adds another maritime industrial asset to Antin’s portfolio and removes Vigor from Lone Star Funds’ holdings. The practical effect for yards, staff and customers will depend on any subsequent statements or operational directives the new owner issues.
Entities mentioned in the report include the seller Lone Star Funds, the selling vehicle Lone Star Fund XI, L.P., the buyer Antin Infrastructure Partners and the acquired company, Vigor Marine Group. The account published by MarineLink on 18 August 2026 is the source of those details.
The completed sale represents a notable change of ownership within the US shipbuilding and fabrication sector. Observers will look for further announcements from the parties to clarify strategy under Antin’s stewardship.