Daewoo Shipbuilding & Marine Engineering (CEO Park Doo-seon) announced it held a simultaneous naming ceremony for two dual-fuel VLCCs equipped with LNG fuel tanks made of high manganese steel for the first time
in the world.
As the naming ceremony has historical significance as the world's first, the ship owner, Mrs. Nazli Karamehmet Williams of Advantage Tanker Co. Advantage Victory), respectively.
The vessel named this time is equipped with the world's first high manganese steel LNG fuel tank, completed after 10 years of joint research and development by Daewoo Shipbuilding & Marine Engineering and POSCO.
Until now, materials such as Invar (nickel alloy steel), aluminum, and stainless steel have been used for cargo holds and fuel tanks that can withstand the cryogenic temperature of minus 163°C. These materials had disadvantages such as high price, difficult work process, and low strength. The high manganese steel LNG fuel tank overcomes all these shortcomings. High manganese steel, a new material, is attracting attention as a next-generation material for LNG cargo holds because its price is lower than that of existing materials, and it has high strength and abrasion resistance as well as performance at cryogenic temperatures.
In particular, Daewoo Shipbuilding & Marine Engineering and POSCO jointly developed a tank manufacturing technology from pretreatment to welding to use high manganese steel as an LNG fuel tank. Through this, Korea's unique LNG fuel tank ecosystem, centered on high manganese steel, was established to secure national competitiveness.
Recently, as eco-friendly policies are being strengthened around the world, ships are also changing to use LNG as fuel. In the future, if price competitiveness is secured through mass production of high manganese steel, technological independence will be possible not only for LNG fuel tanks but also for LNG cargo holds that have been pointed out so far.
Daewoo Shipbuilding & Marine Engineering President Park Doo-seon, who attended the naming ceremony, said, “We have proven once again the competitiveness of DSME’s eco-friendly shipbuilding technology by building the world’s first dual-fuel VLCC equipped with an LNG fuel tank made of high manganese steel.” “Continuous research We will do our best to secure overwhelming technology through development.” end.
