In the preliminary design stage, the accurate estimation of steel weight of ships are important in shipyards. It can support to add the chances for signing a new contract with the ship-owner by estimating a reasonable budget of a new ship. Estimating the weight of the main segments of an entire ship by the feature-based segment method is accurate and effectively reduce the overall estimated error. However, the estimates of the special segments, which are the forepeak, aft and deckhouse, are still uncertainties because of the changeable hull form. Therefore, this study proposes hull form feature to resolve this question. In this study, apply feature-based segment method combined with the hull form features to estimate steel weight of ships. Through the estimated results, we could feedback to the database of hull form feature, and extract the hull form which is similar with the estimated feature. Then, we can quickly to create hull form of the ship based on the shipowner's requirement, and then apply a rough arrangement in preliminary design stage. For the forepeak, aft and deckhouse, the estimated performances using hull form feature have errors with standard deviations of 3%, 5% and 5%, respectively. Meanwhile, the corresponding errors for the origin methods are 7%, 10%, and 6%. The results are suitable for the accurate segment estimation. In addition, we create a quick method to apply the suggestion of the contour of a ship for a rough arrangement. For shipyards and ship-owners, it applied a reference standard to select and configure a ship in preliminary design stage.
|Number of pages||12|
|Journal||Journal of Taiwan Society of Naval Architects and Marine Engineers|
|Publication status||Published - 2016 Nov 1|
All Science Journal Classification (ASJC) codes
- Ocean Engineering
- Mechanical Engineering