#OTD in 1918, USS Cyclops was seen for the last time. The Proteus-class collier disappeared while sailing from the Barbados to Baltimore. Sister ships USS Proteus and USS Nereus also vanished without a trace during WWII. Theories for the losses blame structural flaws, U-boats, storms and shifting cargo but some point out that all three unsolved disappearances occurred in the Bermuda Triangle. The only other ship in the class, USS Jupiter, was converted to an aircraft carrier and was recommission