Receiving system VR100 acoustic tag receiver (shipboard) VR100 is a multi-purpose acoustic tags ultrasonic signal receiver with omni-directional hydrophone, but also can be equipped with a directional hydrophone. I.e. tracking coding type can be used for marking, can also be used to trace a continuous marker. From salmon to sharks, VR100 supports tracking a variety of aquatic organisms. The VR100 is mainly used for small research vessel for active tracking, generally used for short-term fish behavior, such as mating, the reaction of fish to environmental disturbances, short-term movement behavior.