Gyrocompass · Position & Heading
Sperry Marine MK39 Mod4 Gyrocompass is a marine gyrocompass in the Position & Heading / Gyrocompass category. Equipment of this class is typically installed on the bridge or at its associated external sensor location, with data distributed to navigation and control systems as required. Its shipboard purpose is to provide the bridge team and connected equipment with the navigation or environmental measurement represented by this sensor class. The exact piping, electrical, control, foundation, and accessory arrangement depends on the vessel and the installed configuration. Any differences from adjacent models in the same family, including rating, size, material, control, certification, or accessory differences not explicitly listed here, should be confirmed in the manufacturer documentation.
What our service work and the manufacturer documentation say about keeping this model running.
Check sensor condition and mounting, power supply, cabling, connectors, reference inputs, repeaters, interfaces, alarm history, and comparison with independent indications where practical. Calibration, alignment, and exact accuracy limits must follow manufacturer and statutory documentation.
Carry approved fuses, connectors, interface modules, display or control items, sensor service parts, and model-specific power-supply components recommended by the manufacturer.
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