Many maritime accidents have been caused by human-error including such things as inadequate watch keeping and/or mistakes in ship handling. Also, new navigational equipment has been developed using Information Technology (IT) technology to provide various kinds of information for safe navigation. Despite these efforts, the reduction of maritime accidents has not occurred to the degree expected because, navigational equipment provides too much information, and this information is not well organized, such that users feel it to be complicated rather than helpful. In this point of view, the method of representation of navigational information is more important than the quantity of that information and research is required on the representation of information to make that information more easily understood and to allow decisions to be made correctly and promptly. In this paper, we adopt Augmented Reality (AR) technologies for the representation of information. AR is a 3D computer graphics technology that blends virtual reality and the real world. Recently, this technology has been widely applied in our daily lives because it can provide information more effectively to users. Therefore, we propose a new concept, a navigational system based on AR technology; we review experimental results from a ship-handling simulator and from an open sea test to verify the efficiency of the proposed system.

Abstract
I. Introduction
II. Analysis of Previous Study
III. Navigational Aids System based on AR
    3.1. User Requirements
    3.2. Design of User Interface
    3.3. System Configuration
IV. Experiments
    4.1. Experiment Conditions
    4.2. Experiment Results
    4.3. Analysis of User Survey
V. Conclusion
References

• Jaeyong OH(Korea Research Institute of Ships and Ocean Engineering)
• Sekil PARK(Korea Research Institute of Ships and Ocean Engineering)
• Oh-Seok KWON(Dept. of Computer Engineering, Chungnam National University) Corresponding Author