Suction anchors are the core equipment of the mooring system for floating facilities in deepwater oil and gas fields, and are metaphorically referred to as the "magic needle to stabilize the sea" for FPSOs. They consist of a cylinder, a top cover, cast lifting lugs, anchor head chains, etc., resembling a large steel "suction cup". By installing a suction pump at the top of the anchor, a pressure difference is created between the inside and outside of the anchor, firmly adhering it to the deep-sea mud, like a "horse tethering post" that securely anchors the FPSO to the sea. It is reported that the cylindrical FPSO of the Luhua project is moored to the seabed using a multi-point mooring system, with 12 sets of suction anchors. Each suction anchor is designed to withstand a mooring load of 2,500 tons, standing 22 meters tall, with a diameter of 6.5 meters and an embedment depth of 21 meters, capable of firmly adhering 1,700 cars to the seabed.