It assembled the world's largest fleet of dredgers, which sucked up 150m cubic meteres of clay and mud and dumped it in 它组成世界上最大的挖泥舰队，吸收150立方米的泥土和软泥堆积到深水里，堆在最上面一层的是硬泥土，大型的挖泥被工作裸露的铺设。