Abstract: For improving the teaching quality of CAD courses in Naval Architecture and Ocean Engineering,this article presented the model that aiming at completing courses with guided teaching. It Developed a naval VR-design experiment platform which is based on Internet and use the principle "close to calss,easy to use, improve ability, support comprehensive". It can improve the efficience of classes and the abilities of design of students, while solving problems including designal classes divorcing from reality and deficiency of experiment supports.

Key words: Ship-CAD, Ship virtual design, Online experiment platform