Shipbuilding is a typical complex system engineering and requires many different enterprises and plants to work cooperatively to strive for the maximum profit. Supported by the computer, information, and Internet technology etc., CSCW plays a very crucial role in the multi-team, multi-subject, multi-layer field. Therefore, CSCW is necessary to be applied into the shipbuilding industry according to the shipbuilding characters and market requirements. Firstly, a collaborative shipbuilding system is set up and analyzed in detail, and then a collaborative decision support system is built up in order to make operations fluent. In the end, a collaborative ship commerce system is constructed and discussed. The application of CSCW is evidently useful to improve the shipbuilding industry and enhance the enterprisepsilas competitive capability.