Powering America’s Next-Gen Fleet Oilers
Supporting the US Navy’s John Lewis-Class (T-AO 205)
The US Navy’s John Lewis–class fleet oilers form the backbone of the service’s modern replenishment capability. Designed to refuel and resupply carrier strike groups, amphibious ready groups and surface combatants at sea, they extend the reach and endurance of US and allied naval forces across the Pacific, Atlantic and wider global operations.
Twenty ships are planned for the programme, replacing the long-serving Henry J. Kaiser-class with a more efficient, higher-capacity and environmentally improved platform.
Key Facts
Reliable Auxiliary Power for Mission-Critical Systems
While main propulsion is provided separately, each John Lewis–class vessel relies on Bergen B32:40 medium-speed gensets to supply its full electrical power across all ship systems.
This auxiliary power is essential for the operational performance of modern fleet oilers, supporting navigation, radar and ship-control systems, communication suites and mission networks, cargo transfer and RAS equipment, aviation support systems, and safety, monitoring and damage-control infrastructure.
Strengthening the US Navy’s Global Readiness
As the class grows toward 20 ships, the John Lewis programme will secure the Navy’s long-term replenishment capacity for decades to come. Reliable auxiliary power is a foundational part of this capability. By providing durable, efficient B32:40 gensets, Bergen Engines supports sustained fleet mobility, predictable ship availability and consistent operational readiness.
The result is a modern replenishment fleet equipped to keep naval forces supplied, fuelled and mission-ready across the full spectrum of global operations.
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