The present invention relates to an apparatus for verifying an underwater navigation performance for verifying an underwater navigation performance for measuring the position, speed and posture of an antibody in an underwater environment in which GPS is not available. An apparatus for verifying an underwater navigation performance mounted on a boat of the present invention includes navigation detecting means for obtaining first positional information on a ship; A navigation measuring means that includes a plurality of sensors, collects sensor data generated from a plurality of sensors, and measures second position information on the ship based on sensor data collected according to an input algorithm; And a fixing means fixed to the ship and to which the navigation detecting means and the navigation measuring means are fixed.
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