America develops Sea Shadow Sea Stealth Battleship inspired by F-117 aircraft, but the project never went further than the testing phase.

A group of engineers of the Skunk Works office of Lockheed Martin weapons group started to develop Sea Shadow since 1978, when trying to apply submarine's involvement for water surface ships.

Sea Shadow Program inspired by stealth aircraft F-117.

Engineers found that the angular surface could dispersed Sonar waves, while reducing the sound and sound inside the ship.

Prototype Sea Shadow moved off the city of San Francisco in the state of California, USA, March 1999.

However, the US Defense Ministry was not so salty with these types of tests until Ben Rich, the head of the Skunk Works office of Lockheed Martin, adjusting the idea to apply for battleships

Skunk Works office then signed a contract with the Advanced Defense Research Project Agency (DARPA) to apply stealth concepts and materials for water battleships, while checking the impact of seawater

Sea Shadow was completely developed and assembled on a sinking barge in Redwood, California.

The first tests of Sea Shadow in 1981 did not obtain good results.

After solving the problem, the Sea Shadow project was continued and the ship completed in 1984. Sea Shadow participated in night tests in the 1985-1986 years, but the project never went further than the stage

Prototype San Francisco performed at the San Diego Fleet Week in the US in October 2005.

However, the results of Sea Shadow test are applied to improve other naval technologies such as the utensils of the submarine.

The public admired Sea Shadow in 1993 and the ship seemed to inspire filmmakers to build an image of Sea Dolphin II stealth battleship in the film "Tomorrow Never Dies" in 1997.

The US Navy sold Sea Shadow in 2006, but it seems that no one is interested by the contract asking the buyer not to operate the ship but only can demolish it.

It is unclear why Sea Shadow is not included in the museum or other organizations, but it may be related to the technology on the ship.