This is a summary of the text:
The text is a transcript of a video about how supertankers are built to transport liquefied natural gas (LNG) across the world. It describes the process of constructing the ship from steel sheets, bending them into curved shapes, welding them into blocks and sections, and assembling them into a huge hull. It also explains how the tanks are insulated and lined with metal membranes to withstand extreme temperatures and pressures, and how the ship's engine can run on both diesel and natural gas. It shows the challenges and dangers of controlling such a colossal and explosive cargo, and the role of computers and electronics in navigation and operation. It ends by praising the tanker as a peaceful and technological marvel that brings warmth and light to people.
Here are the key facts extracted from the text:
1. Natural gas is the main hydrocarbon fuel on earth today and it can be transported in a liquid state by tankers.
2. The world's largest shipyard in South Korea produces about 75 percent of all tankers transporting liquefied natural gas today.
3. It takes about two and a half years to build one tanker, which consists of 98 large blocks that are welded together like a puzzle.
4. The thermal insulation of the tank is complex and multi-layered, and it can maintain extreme temperatures for only 15 days, after which the ship needs to unload.
5. The engine of the tanker can run on both diesel and natural gas, and it has a lifting capacity of 3 thousand 200 tons.
6. The crew of the gas tanker consists of engineers, operators and programmers, and the ship is controlled by computers and monitors.
7. The total amount of energy contained in the liquefied gas of the four tanks of the ship is equal to the energy of 60 nuclear bombs dropped on Hiroshima.