The design process of ship concept definition is a key activity to minimize and reduce the future manufacture costs. Moreover, the concept design determines the final ship product and ship form, and the basic structure. Much of the ship's potential added value is set by concept design. The paper presented a based process conceptual design model of ship. The activity process is discussed in detailed. The main purpose of the model development is to initiate concept design standard that is necessary for design and manufacture a ship well.