In this paper,the fuzzy controller for the remotely operated underwater vehicle(ROV)has presented.The ROV is best tool in ocean explore and observation,which is also very complex system.The objective of this study is to design fuzzy controller for the station-keeping.For the posture control of the ROV,we employ embedded system to design and develop the prototype of the roll angle control system.It is used to control the thruster.The experiment results demonstrate effectiveness of the proposed controller.