The new KDG-300 current indicator is based on a well proven product with a reputation of ease of use and very reliable long term stability. The KDG-300 is delivered pre- calibrated from the Kaijo factory, so there is no need for cumbersome post- installation calibration at sea. It measures currents through four separate axis, and you can read from five seperate layers of your own choosing. This Doppler log has an accuracy of 1% or better, and can measure speed over bottom down to depths of 450-500m.