As an impact of the increased pressure to reduce delivery time and cost of new vessels, many shipyards are reviewing their procedures and tools to manage and share information across all partners and shipyard departments. Until know, the most common requirements for integration between shipbuilding CAD Systems and PLM's were basically two: transference of the vessel product structure from the CAD to the PLM, comprising both the geometry of the ship´s items for visualization purposes and items attributes (metadata); and management of all documents generated by the CAD in the PLM. The result of these integrations can be considered as a low/medium level of integration. On the other hand, and based on the lessons learned and on the issues identified in the shipbuilding projects developed in the last years, other important additional requirement for the CAD-PLM integration are the need for a continuous synchronization of the information managed by the CAD and by the PLM. This requirement leads to the need of a bidirectional integration between the CAD and the PLM and to the availability of publishing and synchronization processes automating the integration. Another requirement derived from the previous one is the possibility of defining the most important standard components and model items of the ship (e.g., equipment and main fitting items) in both the CAD and the PLM, depending on the project stage. The design of the integration has been done with the objective of limiting the degree of coupling between the CAD and the PLM, with several important aims in mind: one, to reduce to a minimum the impact of the integration on the performance of both systems (the CAD and the PLM); and two, to produce a scalable solution able to work with hundreds of designers in the CAD engineering side and with thousands of PLM users in the whole shipbuilding organization

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