We have released an online demo of the RoPax vessel which we have worked on with CETENA in the context of the HOLISHIP research project. The tool is free and there is no registration required. The model parameters are based on a reference design but can be changed online so that the hull geometry changes accordingly. Global changes can be made to the hull shape, but also more local ones such as changing the bulbous bow and the skeg shape. The modified hull geometry can then be finally downloaded as STL.