Speed Log · Position & Heading
Sperry Marine Naviknot is a ship speed log (Position & Heading / Speed Log (Doppler / EM)). It is normally installed at the bridge with a hull-mounted or external sensor. It is intended to measure vessel speed through or over the water according to the installed sensor principle. The meaning of any embedded size or rating code should be confirmed in manufacturer documentation. In service it interfaces with navigation sensors, bridge displays, ship power supply, data networks and alarms relevant to the equipment function.
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The NAVIKNOT series is a range of speed logs that provide accurate speed measurement for various marine applications.
What our service work and the manufacturer documentation say about keeping this model running.
Check power supplies, data interfaces, alarms, sensor health and agreement with independent navigation information where practical. Inspect external antennas, scanners or transducers as applicable and review fault logs and self-test results. Verify required backups, records and bridge procedures; exact calibration tolerances and test methods must follow manufacturer and statutory documentation.
Typical spares include approved fuses, cooling fans, display or keypad parts where supported, interface modules, data cables and selected sensor or antenna components according to the vessel's critical-spares policy.
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