Five sunken warships and submarine vanish without a trace in Indonesia. Here’s one theory why

An international investigation has been launched into the mysterious disappearance of several second world war shipwrecks which have vanished from the bottom of the Java Sea off the coast of Indonesia.
Former colonial ruler The Netherlands has launched a probe into how two Dutch navy ships seemingly vanished from the bed of the Java Sea, while Britain has urged Indonesia to investigate the disappearance of three of its vessels.
Naval warships and war graves are protected under international law and the desecration of such shipwrecks is illegal.
However Indonesia refused to take the blame Thursday for the disappearance of the shipwrecks - lost in 1942 during the Battle of the Java Sea and considered war graves - that investigators believe could have been salvaged for scrap.

More than 900 Dutch and 250 Indo-Dutch sailors died during the battle in which the Allied navies suffered a disastrous defeat by the hand of the Imperial Japanese Navy.