St. Johns Ship Building Delivers Second Advanced Crew Transfer Vessel to Atlantic Wind Transfers, Bolstering U.S. Offshore Wind Fleet
Key Insights
St. Johns Ship Building has delivered the Atlantic Endurance, a new crew transfer vessel, to Atlantic Wind Transfers, enhancing the U.S. offshore wind support fleet.
The 81-foot catamaran, designed by Chartwell Marine, is the second Ambitious-class CTV built by St. Johns for AWT, featuring advanced Tier 4 engines and waterjet propulsion.
Fully commissioned and available for charter, the Atlantic Endurance joins AWT's growing fleet, which supports major offshore wind projects across the U.S. East Coast.
This delivery highlights St. Johns Ship Building's increased capacity and strategic focus on meeting the rising demand for specialized vessels in the burgeoning U.S. offshore wind sector.
St. Johns Ship Building, a Palatka, Florida-based shipyard, announced on August 1, 2025, the successful delivery of the Atlantic Endurance, a new crew transfer vessel (CTV) commissioned for Atlantic Wind Transfers (AWT) of North Kingstown, Rhode Island. This milestone marks a significant expansion of the U.S. domestic fleet supporting the rapidly growing offshore wind sector, reinforcing the nation's capabilities in renewable energy infrastructure.
The 81-foot, 4-inch by 28-foot, 5-inch Atlantic Endurance is the second Ambitious-class CTV built by St. Johns for AWT, following the Atlantic Resolute delivered last year. Designed by Chartwell Marine Ltd. of England, these aluminum catamarans are engineered for high performance and efficiency in demanding offshore conditions. The Atlantic Endurance is fully commissioned and immediately available for charter, poised to support critical operations and maintenance activities for U.S. offshore wind projects.
Propulsion for the Atlantic Endurance is provided by twin EPA Tier 4 MAN V12-1400CR engines, driving HamiltonJet HM651 waterjets through ZF 3050 gears, ensuring robust and reliable performance. Ship’s service power is supplied by twin Cummins Onan 29kW generators. The USCG Subchapter L vessel is designed to accommodate 24 passengers and a crew of three or four, optimizing personnel transfer capabilities.
Charlie Donadio, President and Founder of AWT, stated, “The delivery of the Atlantic Endurance represents a key milestone for Atlantic Wind Transfers as we continue to grow our fleet of dependable, high-performance CTVs supporting the U.S. offshore wind sector.” AWT now operates a fleet of four CTVs, including the pioneering Atlantic Pioneer, the first U.S.-built CTV, which is currently chartered to GE Renewables for operations and maintenance at Ørsted's Block Island Wind Farm. AWT’s Atlantic Endeavor supports Siemens Gamesa at Dominion Energy's Coastal Virginia Offshore Wind, while the Atlantic Resolute is engaged with Boskalis on Ørsted's Sunrise Wind project off Montauk, New York.
Under the ownership of Americraft Marine Group LLC since 2022, St. Johns Ship Building has strategically invested in facility upgrades, production streamlining, and workforce expansion to meet the escalating demand for CTVs. The shipyard has delivered five CTVs within an 18-month period, including two for AWT and three for WINDEA CTV LLC, a joint venture between Hornblower Group and MidOcean Marine LLC. Joe Rella, President of St. Johns Ship Building, commented, “The delivery of Atlantic Endurance marks another important milestone for St. Johns Ship Building as we continue to deliver high-performance CTVs that meet the demands of the offshore wind market.” This consistent delivery record underscores the shipyard’s pivotal role in bolstering the domestic supply chain for the burgeoning U.S. offshore wind industry.