The keel for the future USS Pittsburgh was laid at HII's Ingalls Shipbuilding division on June 2.
It is the 5th Navy vessel to be named after Pittsburgh, Pennsylvania, and its surrounding region.
The ship is a San Antonio class amphibious transport dock designed to support Marines and their equipments.
The most recent USS Pittsburgh (SSN 720) was a Los Angeles-class submarine that served from 1984 to 2019.
The ceremony signifies the joining of the ship's major components and is a significant milestone in ship production.
The ship's capabilities are enhanced by its flight deck and hangar, allowing it to operate Marine Corps helicopters.
The San Antonio class supports various missions, including amphibious assaults, and special operations.
Ingalls is also constructing the future USS Richard S. McCool Jr., and the future USS Harrisburg.