1980年年中西德对世界各国拥有挖泥船队情况作了一个调查统计,世界挖泥船(按船舶≥100总登记吨统计)总数为704艘,这比1978年时统计的644艘增加近10％。世界商船队朝着船舶大型、快速发展,要求海港进港航道加深,尤其是货流转向第三世界国家更加促进了 In 1980, Central and Western Germany conducted a survey on the dredging fleets owned by various countries in the world. The total number of dredgers (according to the total registered tonnage of ships ≥100) is 704, which is an increase from 644 in 1978 Nearly 10%. The large-scale and rapid development of the world’s merchant fleet towards shipping requires the deepening of the seaport entering the harbor, especially the shift of the flow of goods to the third world countries