The USS Scorpion (SSN-589) was a Skipjack-class nuclear submarine of the United States Navy that tragically sank on May 22, 1968, with the loss of all 99 crew members. The submarine was returning to its home port in Norfolk, Virginia, after a deployment in the Mediterranean. The exact cause of the sinking remains uncertain, though theories range from an internal explosion to mechanical failure or involvement in Cold War espionage activities. The wreckage was discovered in October 1968 at a depth of 9,800 feet in the Atlantic Ocean. The loss of the Scorpion remains one of the most mysterious and somber incidents in U.S. naval history.The term “SUBLOSS” in the context of the U.S. Navy refers to the catastrophic loss of a submarine, typically involving the sinking and destruction of the vessel, often with significant loss of life.The term “SUBSUNK” in the U.S. Navy refers to the confirmed sinking of a submarine. It is a formal designation used when a submarine is lost, indicating that it is submerged and has likely suffered catastrophic damage, making recovery and survival of the crew unlikely.side bar correction: USS Thresher, the other nuke sub the US Navy lost, sank in 1963.0:00 Scorpion Sub Brief18:23 Scorpion sunk