This paper describes a new system for a shell plate forming which is usually regarded as a special skill in a ship yard. The system has a characteristic to support a workman be engaged in shell plate forming by indicating the logical way where to perform a press or heating. This system shows a good performance for a time consuming and an accuracy of forming, after has been introduced by a one of the major Japanese shipyard. Also, this paper describes an application of the system to other works for a ship construction.