The first public glimpse of the Navy's Sea Shadow
occurred in 1993s, when onlookers spotted the curiously helmet-shaped vessel emerging off the coast of California. Sea Shadow
had been kept a secret since 1986, when the Navy quietly tested its capabilities as a stealth ship. Could it maintain low radar visibility? Could it evade sonar sensors? Additionally, its Small Waterplane Area Twin Hull, or SWATH, boosted the vessel's stability. Automation technology enabled Sea Shadow
to operate with minimal human guidance. The ship was decommissioned in 2006 and is currently up for donation.
Read the full story in "The Secret Ship"