SSN 774 Virginia

On 30 July 2004, Virginia (SSN 774) nuclear-powered attack submarine completed its first open ocean voyage, also called Alpha Sea Trials (AST). The AST included a range of submarine and propulsion plant operations, submerging for the first time, and high-speed runs on the surface and submerged, to demonstrate that the ship’s propulsion plant is fully mission capable. The next test for Virginia were Bravo sea trials in August which played particular attention to the ship's underwater acoustics. The Virginia-class lead ship, SSN 774, was commissioned on Saturday, October 23, 2004, at the Norfolk Naval Base. At that time 10 submarines were under building contract of a planned 30 ships class. Only two hulls were commissioned of this Block I design.

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