One day in February 1948, a Dutch cargo ship was sailing in the Strait of Malacca. Around evening, a strong storm suddenly hit, causing the cargo ship to bump and rock on the sea. After the storm, no one was seen moving on the deck of the cargo ship. Only the rhythmic roar continued to come from the engine room. The ship sailed straight in one direction until it reached the coast of country A. It could no longer move forward, but the engine was still whining...

The border guards of country A saw this. The situation was confusing. Some people speculated: Could it be that all the personnel were asleep?

They boarded the ship cautiously and found that all the crew members were lying down in different places. Someone shouted loudly, but these people showed no response. Another person put his hand to the crew member's mouth and nose and found that there was no breath; he touched his chest and found that there was no heartbeat. Oh, they are all dead!

The border guards immediately reported the matter to the relevant authorities and invited a forensic doctor to find the cause of death. Doctors carefully examined all the deceased and found no trauma or any symptoms of poisoning.

Doctors believe that the death of the crew members is very similar to the death of a person suffering from a heart attack. But then I think about it, is this possible? The answer is obviously no.

Because it is absolutely impossible for these crew members to die from heart attacks at the same time. So what exactly caused this tragedy? This question remained unanswered for a long time. So this maritime tragedy that shocked the world added another unsolved mystery to the world.

With the development of modern science and technology, this mystery has finally been solved by scientists. It turns out that the invisible and intangible "murderer" committed the crime in infrasound.

Malacca Sea Ship