2016 年 135 巻 p. 184-193
It is one the most important things that vessels arrive at the destination safely. Therefore, navigators keep a sharp lookout for safety of navigation. By the lookout, navigators obtain the state of the surrounding and maneuver for avoiding vessels at a proper timing. Navigation support device needs to be without limited action and area using. The transmission type optical head mounted display was used for developing navigation support device by authors. The device of display screen needs to enhance high visibility and to provide information without user's burden. When there is much information for the size of the screen, the user's burden becomes bigger. Thus, this device classified information under three modes and displayed. To improve visibility of screen, we select colors from precedent monographs for screen of head mounted display. In experiment on board, we checked display visibility and confirmed calculated values.