The JRC JLN-550 Doppler Sonar is designed to provide ship speed information with higher stability in the dual frequency modes. It uses a lower ultrasonic frequency that is adequate to measure the ship’s speed against the ground up to larger depths and the other using a higher ultrasonic frequency that allows the ship’s speed against the water to be measured even in water with tiny bubbles.
JRC JLN-550 Doppler Sonar Dual Axis Speed Log provides ship speed information with higher stability in dual frequency mode. The lower ultrasonic frequency measures ground speed & the higher ultrasonic frequency calculates the ship’s speed against water with a minimized effect of aeration. Compact transducer enables bow installation.
●Ship speed measurement is insensible to bubbles generated in high-speed navigation, ensuring stable speed display.
●The transducer is substantially downsized, allowing it to be installed on the bow side that is little affected by bubbles.
●An underwater-mateable connector is adopted for the transducer, so that a transducer can be replaced at a quay even in case of its failure.
●The equipment is provided with an additional function of indicating the ship’s fore and aft speeds and port and starboard speeds by entering GPS information.
●The ship’s port and starboard speeds at its arbitrary position can be indicated by entering ROT information.
●An optimal Doppler sonar system can be configured by combining a variety of options.
●On-line maintenance (option) allows any failure to be detected during navigation.
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