In simple terms, water excavators were developed to address the issue of excavators being unable to work underwater. Not only can they operate on land, but they are also capable of underwater operations, performing tasks such as excavation, floating navigation, and dredging. This allows water excavators to adapt to more complex construction environments compared to traditional excavators, significantly enhancing work efficiency.

Overall, water dredgers are designed to meet specific construction requirements, offering versatility in work environments, enhancing work efficiency, and ensuring smoother project progress.