海上浮式生产设施通常采用多条系泊锚腿将上部平台设施与海底锚桩连接，水深超过1500m时锚腿的预铺设工作面临前所未有的挑战和困难。本文结合中国南海西部半潜式平台系泊锚腿预铺设作业的工程实践，以动力定位系统、主动深沉补偿式折臂吊机、500t锚系处理绞车配合作业的方法下放锚腿；结合锚头链与锚桩连接、锚腿中段聚酯缆下放、锚腿湿存等问题，深入分析、探讨、总结锚系作业船舶在施工中的要点和难点。

The offshore floating production facilities usually use multiple mooring legs to connect the upper platform facilities with the seabed anchor piles. The water depth of more than 1500 meters will bring unprecedented challenges and difficulties to the mooring leg pre-laying work. In this paper， based on the engineering practice of the semi-submersible platform mooring leg pre-laying work in the west of the South China Sea， the mooring legs are lowered by the method of dynamic positioning system， active heave compensation offshore crane and 500 ton anchor handling winch. Based on the connection between the anchor head chain and the anchor pile， the placement of polyester cables in the middle section of the mooring legs， and the wet storage of the mooring legs， this paper conducts a thorough analysis and summary of the key points and difficulties in the construction of anchoring handling vessels.