Unidentified submerged object

Unusual phenomenon in water that is not readily identifiable

An unidentified submerged object (USO) is an unidentified object submerged in water. The U.S. Navy classifies USOs as whales, sharks, and other sea creatures that can interfere with ship maneuvering, sonar operations, and oceanographic research.[1]

See also

  • Unidentified flying object (UFO)

References

  1. ^ Christenson, Scot. "USOs Not UFOs Have Been the Greatest Threat to the Navy". usni.org. August 2022, Naval History Magazine, US Navy. Retrieved 21 September 2023.