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Summary

The video explores the tragic sinking of the Indonesian submarine KRI Nanggala 402, sparking public discussions about submarines, their history, and safety. It traces the origins of submarines, from William Bourne’s 1578 concept to Cornelis Drebbel’s first operational design in 1620, and their evolution into military tools. The video also delves into how submarines work, including ballast tanks, sonar systems, and nuclear-powered engines. It further examines submarine crew dynamics and the dangers of deep-sea missions, underscoring the risks involved in rescue operations and the hope for improved safety measures in the future.

Takeaways

• 😀 The tragic incident involving Indonesia's KRI Nanggala 402 submarine sparked widespread discussions about submarines in Indonesia.
• 😀 Submarines were initially conceptualized by William Bourne in 1578, but their practical use didn't begin until the 17th century with Cornelis Drebbel's first submarine in 1620.
• 😀 Submarines were not originally designed for warfare but for exploration and tourism, with the first military use emerging in 1775 with the Turtle during the American Revolution.
• 😀 The modern submarine can dive and surface due to ballast tanks, where water is used to increase weight for diving and air is pumped in to decrease weight for surfacing.
• 😀 Submarines use sonar systems, similar to echolocation in whales and bats, to navigate and detect objects underwater due to limited visibility.
• 😀 The advent of nuclear-powered submarines revolutionized the field, allowing submarines like Russia's VR 941 class to remain submerged for 25 years without refueling.
• 😀 Despite technological advancements, submarines still face significant risks, such as the tragic KRI Nanggala 402 disaster, caused by immense ocean pressure at 850 meters depth.
• 😀 Submarine crews are divided into two main categories: military operatives (blue uniforms) and technical workers (yellow uniforms), each with distinct roles.
• 😀 Submarines can remain submerged for extended periods, with some missions lasting up to 77 days, and require logistical resupply when docked at bases like Natuna Island in Indonesia.
• 😀 Rescue missions for submarines are incredibly difficult due to the extreme pressure of the ocean depths and the need for time-sensitive action, as seen in the delayed response to KRI Nanggala's sinking.
• 😀 The hope is that lessons learned from accidents like KRI Nanggala will lead to improvements in submarine safety and more effective rescue operations in the future.

Q & A

What led to the increased discussions about Indonesia's KRI Nanggala 402 submarine?

The tragic incident involving the Indonesian submarine KRI Nanggala 402, which sank, sparked widespread discussions in Indonesia. People questioned why the submarine ran aground and expressed sympathy for the crew and the event.

Who was the first person to conceptualize the idea of a submarine?

The idea of a submarine was first conceptualized by English mathematician William Bourne in 1578, though his idea was dismissed as a fanciful imagination at the time.

When did the first functional submarine get created and by whom?

The first functional submarine was created by Dutch engineer Cornelis Drebbel in 1620. It was made of wood, shaped like a capsule, and powered by four men using paddles. It could dive to a depth of 5 meters.

How did the use of submarines evolve from leisure to military purposes?

Initially, submarines were not intended for military use. The first military submarine, the Turtle, was introduced in 1775 by American inventor David Bushnell during the American Revolution. It marked the start of submarines being adapted for warfare.

What is the principle behind a submarine's ability to dive and surface?

Submarines control their buoyancy using ballast tanks, which are filled with water to dive and emptied of water, replaced by air, to surface. This allows submarines to adjust their weight and float or sink as needed.

How does sonar technology work on submarines?

Sonar technology uses sound waves to detect objects underwater. A submarine sends out a sound signal, and the echo from surrounding objects helps the submarine detect their location and distance. This method is similar to how whales and bats use echolocation.

What powers modern nuclear submarines, and why is this technology preferred?

Modern nuclear submarines are powered by nuclear energy, which allows them to operate for extended periods without needing to surface for fuel. This is especially beneficial as it makes them highly efficient and capable of remaining submerged for years without refueling.

What role do submarines play in modern warfare?

In modern warfare, nuclear-powered submarines, especially those carrying nuclear warheads, are primarily used as a deterrent. They are not often used in active combat but instead serve to maintain a balance of power by threatening retaliation in case of nuclear attack.

What is the purpose of dividing submarine crews into 'blue' and 'yellow' teams?

In submarine operations, crews are divided into 'blue' and 'yellow' teams to handle different tasks. The 'blue' team focuses on military operations like navigation and weaponry, while the 'yellow' team handles technical tasks like maintenance and supplies. This division ensures the smooth running of long missions.

What challenges are involved in submarine rescue operations?

Submarine rescue operations are extremely challenging due to the high water pressure at great depths and the limited time available. In the case of the KRI Nanggala 402 disaster, rescue efforts were delayed, highlighting the complexity and risks of such missions.