3 D Modelling tools have been in existence since long time and have been used extensively in new construction projects. However, in recent years, use of these modelling tools have been extended from construction projects to repair and retrofit projects as well.  We have used 3 D modelling tools in many prominent repair and retrofit projects.

3-D ISO View of Sponsoons

DWT increment was one project where we used 3D modelling tool effectively. .  his was a very interesting project where client wanted to  increase the dead weight of the vessel maintaining the same draft. Increase in dead weight was achieved by installation of sponsoons on port and starboard side each. Since this was a retrofit project, so there was a severe time constraint. To avoid delays in shipyard during the construction process, complete detail engineering and

3-D Model of one of the ER Zone

Retrofit projects have challenges of their own. Some of the common but major issues are space restriction, weight monitor( control and optimization)  etc. . Many of these issues can be solved by using 3 D modelling by:fabrication drawings were done using 3-D modelling tools. We used FORAN in this specific case. Successful completion of this project illustrated that use of 3D modelling for small size repair work is cost effective as well and better than conventional methods of 2d drawings and in-situ construction. Use of 3-D modelling tool also ensured that all stakeholders like designers, yard production engineers and management could be on the same platform.

• Spreading out the equipment from skids (like RO plant unit) and relocating at
  

  different feasible location

• Optimizing the FCU sizes and nos to utilize spaces
• Split electrical panels and reduce its size

Weight Control In Basic Design

After our experience with 3-D modelling tools, we can say with confidence that 3-D modelling tools are very useful for simple as well as complex projects, if used effectively.    It is extremely important to mange weight control of retrofit projects to ensure optimal overall project cost and vessel’s stability . Modelling tools thus come very handy and solves the purpose.