One ship carrying 200,000㎥ of gas—why other ships avoid it! ⛽🚢 #LNGShip #Maritime

Ink and Ashes

An LNG carrier loaded with two hundred thousand cubic meters of liquefied natural gas is one of the most carefully engineered vessels ever built — and one other ships deliberately avoid at sea. Natural gas liquefied at minus 163 degrees Celsius shrinks to one six-hundredth its original volume, making transoceanic transport possible but requiring extreme precision in every aspect of ship design. Membrane tank structures lined with ultra-thin Invar steel plates just millimeters thick must be welded in absolutely dry conditions where not a single water droplet can contact a weld seam — because microscopic defects at cryogenic temperatures become structural failures. Despite carrying energy equivalent to a massive explosion, LNG carriers have maintained a near-perfect global safety record since their introduction. Crews earn among the highest salaries in shipping, selection standards are strict, and the vessel's security level is so high that pirates have virtually never successfully boarded one. #LNGShip #LNGCarrier #MaritimeEngineering #ShippingIndustry #NaturalGas #LiquefiedNaturalGas #MaritimeFacts #ShipEngineering #OceanFreight #EnergyShipping #MaritimeTechnology #ShipDesign #NavalEngineering

Transcript

00:00This is a giant transport vessel more terrifying than an atomic bomb.

00:03One ship carrying 200,000 cubic meters of liquefied natural gas.

00:06At sea, many ships spot it and deliberately keep their distance,

00:09because if something goes wrong, the consequences are almost unimaginable.

00:12This is an LNG carrier, a ship specifically designed to transport liquefied natural gas.

00:17Natural gas is originally a gas, but when temperature drops to minus 163 degrees Celsius

00:21it becomes liquid, volume shrinking over 600 times instantly.

00:25Only then can it be loaded onto ships for transoceanic transport.

00:27Early LNG carriers mostly used spherical tank structures,

00:31carrying approximately 170,000 cubic meters.

00:34Later technology upgrades introduced membrane tank structures.

00:36Tanks arranged flesh against the hull interior with a distinctive diamond pattern inside,

00:40allowing the same size vessel to carry nearly 200,000 cubic meters.

00:43These tanks use a special material called invar steel,

00:46with an extremely low thermal expansion coefficient.

00:48Despite sounding heavy duty, the tank's steel plates are incredibly thin,

00:52many sections only a few millimeters thick.

00:54The real difficulty isn't plate thickness, it's the welding process.

00:57During construction the welding environment must remain absolutely dry,

01:00with strict regulations that not a single drop of water can fall on a weld seam.

01:04Because at extreme low temperatures even the smallest welding defect can amplify into a structural risk.

01:08Any weld problem means potential cracking as temperatures repeatedly shift.

01:11An LNG carrier is essentially a floating energy warehouse at sea.

01:15Surprisingly, since LNG carriers were first introduced,

01:17almost no major explosion accidents have occurred globally,

01:20demonstrating just how high the safety engineering standard is.

01:22Most LNG carriers worldwide load natural gas from the Persian Gulf,

01:26then cross oceans to East Asian countries.

01:28Due to technical complexity and high risk levels,

01:30LNG ship crew salaries rank among the highest in the entire shipping industry,

01:34but selection standards are equally strict.

01:36And there's one rarely mentioned feature,

01:37due to their special structure and extremely high security levels,

01:40virtually no pirates have ever successfully boarded an LNG carrier.

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