Abstract: An underwater swim board enables diver navigation under conditions of zero visibility. A rectangular member has a timer, depth gauge, and compass on its topside to provide a visual indication of time, depth and direction. An enhanced display module on the bottom side of the member contains a microprocessor to receive time, depth, and direction signals from separate electronic timer, depth transducer, and magnetic compass modules in the display module creates representative control signals. The display module also has a display screen and an LCD having variable backlight to vary its light intensity. The LCD receives the control signals and displays the information of the time, depth, and direction signals on the screen. A virtual image display lens mounted on the screen allows binocular viewing of the displayed information as magnified near-to-the-eye apparent screen images for a diver holding a dive mask faceplate against the screen.