USS Cyclops

USS Cyclops was a U.S. Navy cargo ship that disappeared in March 1918 during a voyage in the Caribbean with a full load of manganese ore. Despite extensive searches, neither the ship nor its 306 crew members were ever found, making it one of the largest unrelated maritime losses in U.S. naval history. The disappearance remains a maritime mystery, with theories ranging from structural failure and severe weather to hazards like icebergs or enemy activity, though no definitive cause has been established. The loss significantly impacted naval logistics and has fascinated historians and explorers alike.