We've Dug Up a Spaceship! (Part 1)

"Two robots had arrived near the drilling platform of the Korean's house and had seen the four anchor chains fixing the drilling platform.

The Korean drilling platform was a semi-submersible drilling platform.

What was a semi-submersible drilling platform?

It was one that relied on anchor chains for stability, with the platform half-submerged in seawater, autonomously balancing buoyancy and gravity.

Then, using casing drilling technology, seabed drilling was performed.

It sounded simple.

But in reality, it was quite troublesome, especially in terms of balancing and vertical positioning, which were the main challenges.

Moreover, casing drilling had a significant downside: as the depth of the drill hole increased, the pipeline became thinner.

By that time, the Koreans had developed a new technology that increased the casing's diameter while maintaining pressure balance and had invented a multi-aperture drill bit.