A virtual reality (VR) system for piping planning in shipbuilding has been developed to help engineers easily checking their designdiscussing with each other. The VR system includes two servers: a database server for storing piping dataanother for multi-users interaction. Within same virtual engine room, users can freelyclosely viewcheck the auto-generated piping systems based on the data accessed from a database server. They can also use any independent vocal communication software to discuss with each other online.