Today, it can not be established with certainty when diving first appeared, but there is some evidence that it was 5000 years before Christ.
The first material trace is on the Assyrian relief from the year 885 BC, and an early and authentic record in the manuscripts of the Greek historian Herodotus.
The casting was also motivated by military considerations, and the divers of Alexander the Great in the port of Tir after the siege of 332 BC.
The most important job of the diver in the past was to save the cargo from sinking ships and there are written data about it.
Already during the first century BC, the job was so well organized and divers were classified into pay-as-you-go classes by which the differences in fees depend on the depth of diving.
It was diving only to the breath, and the training started in childhood.
The stones were used instead of weights, and the diver would be tied to the ropes and would plunge up to 31 meters underneath the surface.
The 16th century man of the same time, over time, people were looking for ways to stay as long as possible underneath the surface, at the end of the 16th century, the first major step was made and a diving bell with an open bottom was invented, which dropped vertically into the water, allowing the air to remain trapped within the walls of the bell.
The first information about such a bell dates back to 1531.
In the 1930s, the American, William Phipps, used a system of “mother and daughter” bells that allowed divers to access several sources of air, and in 1690, English astronomer Edmond Halley designed intricate a system by which the amount of air in the bell was supplemented by the fact that the air supply was associated with smaller bells that were located lower than it.
When the system was set up, it would open the bowl on the bowl and the higher pressure on the bowl (due to the greater depth) would bring fresh air to the diving bell.
Halley, along with four others, spent an hour and a half at a depth of 18 feet in the River Thames, showing the efficacy of his invention.
In 1715, John Lethbridge developed a “diving envelope” in which the diver stayed in the “bladder of air”, wrapped in leather, with a glass viewing hatch and two handgrips with waterproof sleeves.
Lethbridge wrote that with his equipment it was possible to work at a depth of 18 meters and last for 34 minutes.
However, this diving equipment had the same limitations as the diving bell, there was no maneuvering and there was no possibility of continuous supply with fresh air.
Augustus Siebe was noted as the inventor of the first practical diving suit although at that time several inventors experimented with similar diving innovations, since the removal of sunken vessels was a lucrative job and enabled continuous work on new inventions.
By 1840 Siebe also developed an effective breathing valve that made it possible to use a waterproof suits for the entire length of the body, known as Siebe’s a Siebe’s Improved Diving Dress.
It is the direct predecessor of today’s standard suits for deep water with surface air supply.