The story about Dutch cargo ship the S.S. Ourang Medan is widely debated, but it’s too creepy to pass up for our purposes. It’s said that the ghost ship wrecked in Indonesian waters in 1947. When rescuers boarded the vessel, the entire crew was dead with no visible injuries. However, the men were frozen in horror with arms outstretched. A fire quickly broke out in the ship’s cargo hold, which prevented investigators from researching the bizarre incident. Shortly before the rescue attempt, a Morse code message was sent from the Medan: “All officers including captain are dead lying in chartroom and bridge. Possibly whole crew dead.” Another message quickly followed: “I die.” A 1948 newspaper article claimed the sole survivor of the Ourang Medan was located on the Marshall Islands. Just before dying, the man confessed that the ship was smuggling sulfuric acid, and the poisonous fumes killed the crew. Skeptics don’t believe the article is real or even exists — much like the ship itself. Still, chemical smuggling is just one of the popular theories about the Medan, along with carbon monoxide poisoning and UFO attacks.