Reports indicate that on 10 March, the day after "Cyclops" was rumored to have been sighted by "Amolco," a violent storm swept through the Virginia Capes area. While some suggest that the combination of the overloaded condition, engine trouble, and bad weather may have conspired to sink "Cyclops," an extensive naval investigation concluded: "Many theories have been advanced, but none that satisfactorily accounts for her disappearance." This summation was written, however, before two of "Cyclops"s sister ships, and , vanished at sea during World War II. Both ships were transporting heavy loads of metallic ore similar to that which was loaded on "Cyclops" during her fatal voyage. In both cases, their loss was theorized to have been the result of catastrophic structural failure, but a more outlandish theory attributes all three vessels' disappearances to the Bermuda Triangle.