The paper reports on HICADEC-H-a subsystem of HICADEC-developed as the integrated CAD/CAM system for hull design and production information. HICADEC-H has been developed basing upon experiences for computor systems HIZAC and HICAS-H. HICADEC-H can perform data processing interactively based on the three dimensional structural data model, which provides following main features. (1) Automatic modification All the related data for structure modification can be automatically amended. (2) Similar structure generation Similar structures can be generated automatically from the typical structure. (3) Macro commands application Users can make easily their own macro commands to save operations. (4) Flexibility for design and fabrication standards Users can make flexibly their own symboles, design and fabrication standards including post processor standards for NC cutting. (5) Automatic naming and generation of parts (6) Generation of NC data and information for production control (7) Material procurement and stock material control