| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple underwater navigator which can reduce risks of losing the objective direction in water and allows the confirmation of the direction of the object without complicated operation when a diver dives so that even beginner divers can enjoy safety and inexpensive body diving. SOLUTION: A rotatable disc equipped with an azimuth compass needle is located in the center of a transparent openable and closable box. The needle is adhered onto the disc such that the north direction of the needle and the north direction of a sea-floor map show the same direction, and thereby a diver can easily arrive at the destination point by referring to the seafloor map which always shows the north. |
