Sperry Marine NAVIPILOT 4000 – High-Precision Marine Autopilot System

Sperry Marine NAVIPILOT 4000 is a marine autopilot designed for safe, accurate, and efficient vessel control. It utilizes advanced steering control network technology and is capable of self-tuning to the vessel's load characteristics and weather/sea conditions, thereby helping to maintain a stable heading with more optimized rudder activity.

The system is suitable for commercial vessels, cargo ships, passenger ships, offshore vessels, construction vessels, high-speed craft, and integrated bridge systems requiring an autopilot capable of interfacing with gyrocompass, magnetic compass, ECDIS, steering gear, thruster, rudder propeller, waterjet, and VDR.

Self-tuning to load and weather conditions

A key feature of the NAVIPILOT 4000 is its self-tuning adaptive heading control function. The system continuously monitors steering performance and automatically adjusts control parameters such as rudder gain and counter rudder as vessel characteristics change due to load, trim, or sea conditions.

Thanks to this adaptability, the autopilot helps reduce unnecessary rudder activity, maintain a more stable heading, and support optimal fuel consumption. For vessels on long voyages, reducing repetitive rudder movements can contribute to reduced drag, less wear on the steering system, and lower operational costs.

Track Control Support with VisionMaster FT ECDIS

Is NAVIPILOT 4000 suitable for high-speed craft? and NAVIPILOT 4000 TRACK HSC support Track Control functionality when interfaced with theSperry Marine Integrated Bridge SystemMX575C DGPS CompassVisionMaster FT ECDIS. In this configuration, the ECDIS can send heading commands along the planned route, allowing the autopilot to steer the vessel along the selected track.

Track Control is particularly useful for vessels operating on fixed routes, long-distance commercial vessels, or integrated bridge systems requiring a higher level of navigation automation. When implemented, full sea trials are necessary to ensure the correct coordination of the autopilot, ECDIS, and steering system.

Multiple configurations for different vessel types

series offers configurations for different needs. According to product information,NAVIPILOT 4000 Series includes a variety of configurations:

The HSC variants add features for high-speed vessels such as jet dead band compensation and configure hysteresis to create an additional dead zone, suitable for waterjet systems or high-speed steering control.

Control rate, radius and rudder limit

NAVIPILOT 4000 supports steering control by changing direction using turn rateMX575C DGPS Compassturn radius, allowing the operator to choose the turning method that best suits the situation. The system also offers a rudder limitsetting, which can be used as an alternative to rate/radius in certain operating modes. These functions enable smoother ship maneuvering, better control of the rudder angle, and provide safety assistance when navigating in congested areas, narrow waters, or when executing course changes directed by ECDIS.

Control Area Network and NAVINET 4000 Steering Control Network

Sperry Marine has developed a steering system using

Control Area Network – CAN, which allows for the connection of multiple steering control units, Control and Display Units, and related devices within a single control network. This network structure simplifies installation, reduces wiring time, and facilitates future system expansion.In the technical brochure, NAVIPILOT 4000 uses

CAN communication according to IEC 61162-3to connect remote control/display units and to interface with theNAVIGUIDE 4000manual steering system.

Override function

Overrideallows the operator to quickly regain steering control when avoiding collisions, handling emergencies, or when the autopilot shows signs of abnormal operation. When Override is activated, control is transferred to theNon-Follow-Up – NFU, enabling manual steering until the operator terminates Override mode. This is a crucial function in marine autopilot systems, ensuring the crew can intervene immediately in situations requiring rapid maneuvering.IEC 61162-1, sine/cosine

This is a crucial function in marine autopilot systems, ensuring the crew can intervene immediately in situations requiring rapid maneuvering.

The easy-to-operate Control and Display Unit of the NAVIPILOT 4000 features a graphical LCD display, backlight, a sealed foil keyboard, and a clear hard key layout. The screen displays information such as current heading, set heading, override status, heading source, AUTO/NAV/TRACK steering mode, rudder limit, rate-of-turn, radius, weather, speed, rudder order, actual rudder angle, cross track error, off course alarm, and heading difference alarm.

Control and Display Unit – CDUThis design allows the operator to easily monitor the autopilot status in both day and night modes, while enabling quick operation via hard keys and soft keys instead of relying entirely on complex menus.

Key Features of the Sperry Marine NAVIPILOT 4000

Self-tuning adaptive

• for vessels.marine autopilotFully self-tuning adaptive heading control
• Automatically adapts to load, trim, and sea conditions..
• Reduces unnecessary rudder activity, contributing to fuel savings.
• Supports control by
• Supportturn rateMX575C DGPS Compassturn radius.
• rudder limit settingConfigurable.
• BASIC, TRACK, HSC and TRACK HSCwith VisionMaster FT ECDIS..
• rudder limit settingTrack ControlGyrocompass interface:
• 2 x RS-422Magnetic compass interface:.
• IEC 61162-1, sine/cosineIEC 61162-1, sine/cosine.
• Serial interface for track steering or waypoint steering.
• Additional remote Control and Display Units can be connected.
• Operational data is saved on power loss.
• Backlit graphic LCD display.
• Set heading adjustment via control disk and soft keys.
• Analog output for thruster, rudder propeller and waterjet available.
• CAN interface according toIEC 61162-3.
• Connect VDR via RS-422 9600 bps.
• EC type approved according to MED 96/98/EC Wheelmark by Germanischer Lloyd per brochure.

System configuration and related equipment

A system NAVIPILOT 4000 can comprise:

Application of NAVIPILOT 4000 on ships

Sperry Marine NAVIPILOT 4000Suitable for:

• Commercial vessels.
• Cargo ships.
• Passenger ships.
• Offshore vessels.
• Workboats.
• High Speed Craft HSC depending on version.
• Integrated bridge systems.
• Track Control systems with ECDIS.
• Vessels requiring connection to gyrocompass, magnetic compass, VDR, thruster, rudder propeller or waterjet.
• Retrofit projects or upgrade of Sperry Marine autopilot.
• NAVIPILOT 4000 / NAVINET 4000 Steering Control Network.

Why choose Sperry Marine NAVIPILOT 4000?

NAVIPILOT 4000 is a suitable choice for vessels requiring a precise, safe, and easily integrated autopilot system. Theself-tuning adaptive control capability allows the system to self-optimize according to vessel and sea conditions, while Track Control, CAN/NAVINET, ECDIS communication, VDR, gyrocompass, and magnetic compass ensure the device is compatible with various modern bridge configurations.

For shipowners and ship management companies, the NAVIPILOT 4000 offers benefits through stable steering, reduced unnecessary rudder operations, support for fuel savings, and enhanced operational safety during long voyages.

Notes when ordering NAVIPILOT 4000

, please check:Sperry Marine NAVIPILOT 4000it is advisable to check:

• Is the deviceNAVIPILOT 4000 BASIC, TRACK, HSC or TRACK HSC.
• Does the package include the Control and Display Unit, Steering Control Unit, or just a module.
• What type of steering system is used on board: rudder, thruster, rudder propeller, or waterjet.
• Is Track Control needed with VisionMaster FT ECDIS.
• Is connection to NAVIGUIDE 4000 or NAVINET 4000 required.
• Is heading sourced from a gyrocompass, magnetic compass, or both.
• Are RS-422, IEC 61162-1, IEC 61162-3 CAN, or VDR output communication standards needed.
• Is the 24 VDC power supply on board suitable.
• Is the equipment new, stock, tested, or refurbished.
• After installation, sea trial, tuning check, rudder feedback, off-course alarm, override, and steering control transfer are needed.

FAQ – Frequently Asked Questions

What is Sperry Marine NAVIPILOT 4000?

NAVIPILOT 4000 is a marine autopilot system that uses self-tuning adaptive heading control to steer vessels more safely, accurately, and efficiently in various load and weather conditions.

Does NAVIPILOT 4000 support Track Control?

Yes. The "NAVIPILOT 4000 TRACK" and "TRACK HSC" versions support Track Control when connected to a Sperry Marine Integrated Bridge System or VisionMaster FT ECDIS.Is NAVIPILOT 4000 suitable for high-speed craft? and What heading source does NAVIPILOT 4000 accept?The equipment can accept heading from gyrocompass via "2 x RS-422"

Is NAVIPILOT 4000 used for high-speed vessels?

Có. Dòng này có cấu hình NAVIPILOT 4000 HSC and NAVIPILOT 4000 TRACK HSCmeeting the requirements for High-Speed Craft according to ISO 16329.

What equipment does NAVIPILOT 4000 receive heading from?

Thiết bị có thể nhận heading từ gyrocompass qua Magnetic compass interface: and receive heading from the compass via IEC 61162-1 or interface sine/cosine.

Does NAVIPILOT 4000 have VDR connection?

Yes. The system has a VDR RS-422 9600 bps output for transmitting status and alarm data to the Voyage Data Recorder.

What power supply does NAVIPILOT 4000 use?

According to the brochure, the system uses 24 VDC power supply, range 18–36 V, with a maximum power consumption of approx 10 W.