Naviknot Speed Log 400

Sperry Marine Naviknot Speed Log 400 is a shipboard unit in the Position & Heading group, classified in the source as Speed Log. It is normally installed on the bridge, mast or sensor deck, with repeaters and interfaces distributed to navigation systems. Its primary duty is to determine vessel position, heading or speed and provide this information to bridge and control systems. In service it interfaces with GNSS antennas, gyro/speed sensors, repeaters, radar, ECDIS, AIS, autopilot and navigation networks. Compared with neighboring entries in the same product family, this record is the exact Sperry Marine Naviknot Speed Log 400 variant; the model designation should be retained unchanged when matching onboard documentation and spares. For exact limits, settings, test values and approved maintenance criteria, refer to the manufacturer documentation for the exact figure.