Sperry Marine NAVIGAT X MK2 Gyrocompass is a marine digital gyrocompass system designed to provide true headingand in appropriate configurations. These technologies help improve the quality of positioning data when the operating area has corresponding augmented signal support.WAAS data under marine operating conditions. The device is suitable for a wide range of vessels requiring a stable, accurate heading sensor system that meets international equipment requirements for marine gyrocompasses.series offers configurations for different needs. According to product information,

NAVIGAT X MK2NAVIGAT X MK2NAVIGAT X MK1 platform. According to the technical documentation, the system features a compact single-unita single block24 VDC power supply with two independent DC inputs, can control up to 4 analog repeaters, provides 5 additional serial data outputs, and 1 output 6 steps/degree6 steps/degree.

NAVIGAT X MK2

NAVIGAT X MK2 is designed in a is designed as a , meaning the entire main system is integrated into a single device. This structure helps save installation space, simplifies shipboard layout, and reduces the amount of auxiliary equipment compared to some traditional gyrocompass systems.

The control unit and display screen are located on the front of the device, featuring a 4-digit heading display and 6 operation keys. This design allows operators to easily monitor system status, perform settings, and check basic information directly at the device.

High accuracy for maritime navigation systems

Sperry Marine NAVIGAT X MK2 provides heading data with high accuracy, suitable for professional navigation applications. According to product documentation, the device's heading accuracy reaches Static < 0.1° secant latitude, Dynamic < 0.4° secant latitudeWAASSettle point error < 0.1° secant latitude.

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Heading data from the gyrocompass can be supplied to various maritime devices such as radar, ARPA, ECDIS, autopilot, AIS, VDR, heading repeaters, and integrated bridge systems. Therefore, the NAVIGAT X MK2 plays a crucial role in maintaining accurate and stable heading data for the entire navigation system on board.

Dual 24 VDC power supply, enhancing operational reliabilityThe NAVIGAT X MK2 utilizes main and backup power supplies within the range of 18–36 VDC

, corresponding to the 24 VDC power system on ships. Two independent DC power inputs enhance operational safety, especially in case of main power failure.A significant advantage of the system is its ability to maintain north-stabilized3 minutes. This feature helps reduce the risk of heading instability when the vessel experiences a momentary power failure or power transfer during operation.

Automatic Static North Speed Error Correction

NAVIGAT X MK2 supports Automatic Static North Speed Error Correction, which means it automatically corrects static north speed error without the need for additional auxiliary equipment. This is a crucial feature for gyrocompasses, as heading data can be affected by the vessel's speed and geographical location during operation.

Thanks to its automatic correction capability, the system helps reduce manual configuration, improve heading data stability, and provide better support for devices requiring accurate vessel heading, such as radar, autopilot, and ECDIS.

High-speed data transmission, supports IEC 61162-1/RS422

The device supports common maritime data interfaces such as IEC 61162-1, is used to provide positioning data to onboard marine systems, including:, high-speed output, and optionally IEC 61162-1. Outputs can provide gyrocompass heading, magnetic heading (when a suitable data source is available), rate of turn, heading reference status, position, and speed.

In addition, NAVIGAT X MK2 also supports Furuno AD10, output 6 steps/degree output, and rate-of-turn can be selected according to ranges of ±30, ±90, ±300°/min or customized according to system needs. This helps the device easily integrate with both modern marine systems and legacy systems using specific signal standards.

Dual rotor system and fluid damping

NAVIGAT X MK2 uses twin rotors spinning at 19,000 rpm combined with a fluid damping system. According to technical documentation, this structure helps eliminate latitude errors and increase system stability under actual operating conditions at sea.

The device also supports electronic alignment error correction of ±180° within the setup program, reducing the need for mechanical adjustments during installation or system fine-tuning.

High reliability, long maintenance intervals

One of the great advantages of Sperry Marine NAVIGAT X MK2 is its mean time between failures (MTBF) of over 40,000 hours. The device has a recommended maintenance interval of 18 months, which reduces maintenance costs and limits downtime on board.

The system also has monitoring and alarm functions for voltages, gyro current, and the follow-up system. Operational data such as gyro-sphere current, temperature, and operating hours are stored long-term, supporting inspection, maintenance, and technical diagnostics.

Key Features of Sperry Marine NAVIGAT X MK2

• Marine Digital GyrocompassData can be supplied to repeater compasses, radar, ECDIS, autopilots, AIS, VDRs, navigation data printers, and other peripheral devices. Therefore, the NAVIGAT X MK 1 is suitable for both new installations and retrofits on vessels using various signal standards. .
• Compact design as a single block.
• Power Supply 24 VDC, two independent DC inputs.
• Meets IMO A.424(XI), IMO A.694(17), ISO 8728.
• Approved Wheelmark/MED.
• High heading accuracy: Static < 0.1° secant latitude, Dynamic < 0.4° secant latitude.
• Auto-correction of static northerly speed error, no auxiliary equipment needed.
• Available rate-of-turn output.
• High speed data and follow-up transmission rate 100°/sec.
• Accurate heading data transmission via shaft encoder.
• Supports self-calibrating repeater via IEC 61162-1 / RS422.
• Maintains stable North-seeking when power is lost for up to approximately 3 minutes.
• Double rotor19,000 rpmand fluid damping system.
• MTBF over40,000 hours.
• Maintenance interval18 months.
• Has system monitoring and error alert functions.
• Long-term storage of operational data.
• Suitable for various radar, ECDIS, autopilot, AIS, VDR, and repeater compass systems.

Input/Output ports and integration capabilities

NAVIGAT X MK2can receive position, speed, and heading data from electronic sensors viaIEC 61162-1. The device also supports speed signals in the form of200 pulses/nm, steering mode status signals, external heading power status, and alarm mute signals from external controls.

For output, the system can provide heading and rate-of-turn data via various standards such asNMEA TTL, RS422 Sensor Data, IEC 61162-1 Fast, RS422 Superfast IEC 61162-1 or IEC 61162-2, Furuno AD10, output 6 steps/degree and analog rate-of-turn output. Therefore, the NAVIGAT X MK2 is easily integrated into both new build systems and retrofit projects on operating vessels.

Application of NAVIGAT X MK2 on vessels

Sperry Marine NAVIGAT X MK2 Gyrocompass is used as the primary heading source for many navigation and monitoring equipment on board, including:

• Marine Radar.
• ARPA Radar.
• ECDIS/ECS.
• Autopilot.
• AIS.
• VDR/S-VDR.
• Heading repeater.
• Compass monitor.
• Heading management system.
• Voyage data recorder/monitoring equipment.
• Integrated bridge system.

With the ability to output multiple heading and ROT signals, the device is suitable for merchant ships, cargo ships, service ships, work ships, passenger ships, and ships requiring stable heading data for safe navigation.

Why choose Sperry Marine NAVIGAT X MK2?

Sperry Marine NAVIGAT X MK2 is a suitable choice when a digital gyrocompass system with a compact design, high accuracy, easy integration, and reasonable operating costs is needed. The device inherits its platform from NAVIGAT X MK1, has an MTBF of over 40,000 hours, an 18-month maintenance cycle, and the ability to maintain a stable North heading in case of short power interruptions.

For ship owners, ship management companies, and marine electronics service providers, the NAVIGAT X MK2 is a suitable solution for systems requiring a standard heading sensor, easy maintenance, multiple communication standards, and connectivity with various other marine equipment.

Notes when ordering NAVIGAT X MK2 Gyrocompass

, please check:NAVIGAT X MK2, you should clearly check the device configuration to ensure it is compatible with the system installed on the ship:

• Is the device the standard NAVIGAT X MK2 version or a configuration with remote control/display.
• Does it include a repeater, switch-over unit, data I/O unit, or NAVITWIN?
• Output standard to be used: NMEA, RS422, IEC 61162-1, IEC 61162-2, Furuno AD10, or 6 steps/°.
• Is the ship's power supply compatible with the 18–36 VDC range?
• Number of devices that need to receive heading from the gyrocompass.
• Condition of the device if it is stock, replacement, or used.
• Required certificates/classifications for the specific ship type.

FAQ – Frequently Asked Questions

What is NAVIGAT X MK2?

NAVIGAT X MK2 is a marine digital gyro compass system from Sperry Marine, used to provide the ship's true heading and rate-of-turn data for navigation equipment.

Does NAVIGAT X MK2 comply with IMO standards?

Yes. The device meets IMO A.424(XI), IMO A.694(17), ISO 8728, and is Wheelmark/MED approved per product documentation.

What power source does the device use?

NAVIGAT X MK2 uses a 24 VDC power source with two independent DC inputs; the main and standby power supply range is 18–36 VDC.

Does NAVIGAT X MK2 maintain heading during power failure?

Yes. The system maintains its North stabilization state during short power interruptions of up to approximately 3 minutes.

Can NAVIGAT X MK2 connect to radar, ECDIS, and autopilot?

Yes. The device supports multiple heading output formats such as IEC 61162-1, RS422, optional IEC 61162-2, Furuno AD10, and 6 steps/degree, enabling integration with radar, ECDIS, autopilot, repeaters, and other marine equipment.

What is the maintenance interval for NAVIGAT X MK2?

According to the product brochure, the device has a maintenance interval of 18 months and an MTBF of over 40,000 hours.