SS Ourang Medan disaster:

 Two ships were travelling in the sea between Singapore and Malaysia in 1947.The radio signal operators of those received a help message from another ship.That telegraphic message said that all including the Captain of that ship died.It said he too was dying and wanted to help him.These two ships rushed immediately to the location of that ship. All in that ship have died, but no body had even a small wound. Fire had immediately caught in that ship cargo. That ship immediately blasted and was drowned. How did they all die and what exactly happened to that ship still remained as a mystery.