USS Potomac (SSN-814) will be a nuclear-powered Virginia-class submarine of the United States Navy, the first Block VI attack submarines and 41st overall of her class.
[1] Uniquely, Potomac was not ordered prior to her naming due to a dispute between the Navy and builder Huntington Ingalls Industries over the potential cost.
[2] Like their Block V predecessors, Block VI submarines will incorporate previously introduced modifications to the base design in addition to a Virginia Payload Module (VPM).
The VPM inserts a segment into the boat's hull which adds four vertical launch tubes.
[3][4][5] This article about a specific naval submarine of the United States is a stub.