作业船是广泛用于港口建设、航道整治、水下施工、矿藏开采、海底管缆铺设、险情防救、海洋开发、海洋利用、渔业生产等许多领域作业的船舶。除部分作业船舶（如海洋调查船、港口作业船、渔船等）的总体性能与运输船舶相近外，一般都独具特性。
液压反铲挖掘船是近几年国际上新出现的一种新型挖掘作业船，专门挖掘硬质土和石块。
Hydraulic back-hoe dredger is a new type of dredger developed and specially for handling hard soil and stone.
10月11日下午，江苏海新船舶重工有限公司迎来了一批来自日本的贵宾：“中国作业船调查团”。
In the afternoon of October 11, a group of guests from Japan, named "The Mission Group for Chinese Engineering Vessels" was warmly welcomed by Haixin HI.
根据条例，在该船所报告的捕鱼区作业需要有特定类型和规格的渔具以避免捕捞尚未长成的较小幼鱼。
The boat has reported catching fish in waters where regulations require that gear be of a specific type and gauge to avoid captures of smaller juvenile fish that have not yet reproduced.
应用推荐