  {|    |} uss cyclops (ac-4) was one of four proteus-class colliers built for the united states navy several years before world war i. named for the cyclops, a primordial race of giants from greek mythology, she was the second u.s. naval vessel to bear the name. the loss of the ship and 306 crew and passengers without a trace within the area known as the bermuda triangle some time after 4 march 1918 remains the single largest loss of life in u.s. naval history not directly involving combat. as it was wartime, there was speculation she was captured or sunk by a german raider or submarine, because she was carrying  of manganese ore used to produce munitions, but german authorities at the time, and subsequently, denied any knowledge of the vessel. in this article, amolco was erroneously called amalco. the naval history & heritage command has stated she "probably sank in an unexpected storm" but the cause is unknown. ==history== cyclops was launched on 7 m
1910_ships Bermuda_Triangle Colliers_of_the_United_States_Navy Maritime_incidents_in_1918 Missing_ships Proteus-class_colliers Ships_built_in_Pennsylvania World_War_I_auxiliary_ships_of_the_United_States