The US Navy’s newest and final expeditionary sea base (ESB), USNS Hector A. Cafferata Jr. (ESB 8), has completed acceptance trials, marking a milestone ahead of the ship’s planned delivery later this summer.
The three-day underway evaluation took place off the coast of Southern California and concluded on July 17. During the trials, the ship underwent comprehensive testing to verify the performance of its major systems and demonstrate its ability to operate safely and effectively.
“As the final ship of the class, ESB 8 demonstrated its full range of capabilities, and its readiness for delivery and fleet operations,” said Jon Thomas, acting program manager for Strategic and Theater Sealift.
Expeditionary sea bases are designed as mobile maritime platforms that provide critical access infrastructure for the deployment of forces, equipment, supplies, and warfighting capabilities. The flexible vessels support a range of missions, including special operations support, aviation operations, mine countermeasures, and humanitarian assistance.
The completion of acceptance trials brings the ESB program close to the end of its new construction phase. The first ship in the class, USS Lewis B. Puller (ESB 3), was delivered in 2015 and has supported fleet operations for more than a decade.
USNS Hector A. Cafferata Jr., built by General Dynamics NASSCO, is the eighth and final expeditionary sea base of the US Navy. The vessel is named in honor of US Marine Corps Private First Class Hector A. Cafferata Jr., a Medal of Honor recipient who served during the Korean War. It was christened in March this year.
The ESB program is part of the US Navy’s broader effort to strengthen future fleet capabilities by providing flexible, forward-deployed platforms that can support a wide range of maritime operations.