Installation of new production facilities in a shipyard can trigger product manufacturing error, causing rework as well as decreased manufacturing speed and increased cost. Features of the shipyard and the workers’ skill levels combine to impact the manufacturing error. In this study, a method to evaluate installation effect of production facilities in the shipbuilding process considering both the shipyard’s features and the worker’s skill is proposed. This method evaluates the production process defined by integrated product, workflow and organization models using a simulation with rework including manufacturing error of the target product. In the case study on a production process of curved blocks, it is quantitatively clarified that installation of an accuracy evaluation system for curved shell plates by laser scanner to heat bending process can reduce the duration and cost of the process. Under the condition where production space is limited in a shipyard, the proposed system installation leads to greater effectiveness than under the condition where the space is readily available. Furthermore, it is suggested that the proposed system is more effective if the skill level of the workers is low.