History of human ocean exploration

Never, people stop wanting to understand the ocean. However, only in the last few centuries, new technology allows people to dive deep to discover secrets deep in the sea.

During the first ocean exploration, humans often use submersiles - ships that need assistants on land or on water.

In fact, no one knew what Drebbel's ship was like.This is a version created for a TV show.(Photo: Flickr / mijori).

The first dive was built in 1620 by Dutch inventor Cornelius Drebeel. According to the documents of the time, Drebbel's ship could dive down to a depth of about 4 meters, staying underwater for about 3 hours.

It is known that Drebbel experimented with his ship at the River Thames in the presence of King James I.

The illustration of Sergeant Ezra Lee - the first person to control "Sea Turtle" - emerges and opens the door of the tank after an unsuccessful attack.(Photo: AP).

After the 'submarine', people have built 'submarines' (submarines) - types of ships that can be dived without means and equipment onshore / above the water often used in the military today .

According to Business Insider, the first submarine was built in 1775 by American inventor David Bushnell. This ship called 'American Turtle' was originally designed to carry gunpowder to detonate and destroy British ships anchored in New York Harbor. The historical record states that 'American Tortoises' can dive around 4m.

The "Bathysphere" submarine was gradually downgraded in the Bermuda region of the Atlantic on August 11, 1934. (Photo: AP).

In 1930, naturalist William Beebe and engineer Otis Barton built the 'Bathysphere' submersible vessel and conducted a series of diving expeditions over the next four years.

The ship dived to 1,000 meters in August 1934, surpassing the 160m level that humans had previously achieved.

According to scientists, at a depth of 10m, the water pressure is twice as strong as the pressure at sea level. This means that at a depth of 1 km, the pressure will be 100 times stronger!

To withstand such great pressure, engineer Barton designed a sphere-shaped diving vessel made of steel with glass windows made of 7.6cm thick quartz stone - all just to Beebe for the first time. eyes observe the deep-sea environment.

Photo: AP.

In 1949, it was Barton's engineer who broke the record of the 'Bathsphere' when his built Benthoscope ' dived deep down to 1,372 meters off California (USA). Barton designed 'Benthoscope' to withstand much greater water pressure than 'predecessor'.

According to Business Insider, the California dive is recognized as the deepest dive that a submarine is attached to a cable car above each.

(Photo: US Navy).

In 1959, the French oceanic explorer Jacques Cousteau contributed to the design and construction of a diving device exclusively for the first expedition called the SP-360 Denis (also known as ' Diving plate ' ).

"Submarine is manned".(Photo: R. Frank Busby / Oceanographic Office of the US Navy).

Denis is a 3.8-ton submarine, powered by electric propulsion and can stay for 96 hours under water (if only one person is available). Although it is capable of going down to 1,000m, the ship has never dived to more than 350m for safety reasons.

Photo: AP.

In 1960, the human race first touched the ocean floor when it used a diving ship called 'Trieste' to dive down to 10,900 meters to explore the Mariana Trench.

Photo: AP.

The first people to reach the ocean floor were US Navy Captain Don Walsh and Jacques Piccard - the son of the designer of the ship 'Trieste'.

ROV Hercules vehicle descends to the ruins of the Titanic.(Photo: Robert Ballard / NOAA Ocean Explorer).

Later, human beings built remote-controlled diving vehicles (ROV) for exploration. ROV facilities are considered as a breakthrough when not requiring direct operators - which means that the ROV does not need a human compartment or life support devices. Therefore, ROV facilities can be operated continuously without water.

Initially, ROV was used in industries but then, the ROV named 'Hercules' was designed and built for scientific research purposes. The ship was capable of diving 4 km underwater and was used by oceanographer Robert Ballard in 2004 to locate the famous Titanic under the sea.

(Photo: National Geographic / Youtube).

In 2012, filmmaker James Cameron made history using the Deepsea Challenger ship, deep into the Mariana Trench alone.

Alvin dive ship during a scientific verification trip in the Gulf of Mexico in 2014. (Photo: Chris Linder, Woods Hole Oceanographic Institute).

The submarine named Alvin has been used for 50 years to serve scientific research. Over time, the ship has been upgraded several times to ensure the features and safety for the operator. During the 2014 upgrade, Alvin was able to dive down to 4,500m. Reportedly, this submarine has made 4,800 dives to a depth of 4,500m to carry more than 2,500 researchers to serve scientific projects.

With current technology, people increasingly discover the many mysteries of the ocean.(Photo: AMC Networks).

Today, with current technology, people increasingly discover the many mysteries of the ocean. Evidence is that last year when filming in the Mariana Trench, BBC filmmakers 'grabbed' the image of Mariana scallop at a depth of 8,000m above sea level. First discovered in 2014, this is the deepest fish ever discovered by humans.