Qatar has signed a deal worth around $20 billion with South Korean shipbuilders to help cement its position as the world’s largest producer of liquefied natural gas. The Gulf emirate entered into agreements with Daewoo Shipbuilding & Marine Engineering Co., Hyundai Heavy Industries Co. and Samsung Heavy Industries Co. The three Korea-based firms will reserve a “major portion” of their LNG ship-construction capacity for QP through 2027.