Navico NAC-D Ordinateur de pilote automatique

Navico NAC-D Ordinateur de pilote automatique - photo 2

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Navico

000-15621-001

NAC-D Autopilot Computer

The Navico NAC-D (000-15621-001) autopilot computer is a steer-by-wire solution designed for Electronic Vessel Control (EVC) systems. It integrates with Volvo IPS/EVC, Yamaha Helm Master, SeaStar Solutions Optimus, and Yanmar VC10/JC10 electronic steering via NMEA 2000. This compact computer delivers precise steering using Continuum Steering and SteadySteer technology. The product includes the NAC-D computer with integrated Micro-C connectors for simplified installation.

Retail priceBenefit from the professional rate

$999.88 USD

$999.88 USD ~~$1,335.09 USD~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Max power consumption	750 W
Typical power consumption	Depending on the rudder actuator
NMEA 2000 Load Equivalency Number (LEN)	1
Operating voltage	12/24 V DC
Operating temperature	-25 to +55
Recommended fuse rating	30 A
Product width	86.5 mm
Product height	20.0 mm
Product depth	11.5 mm
IP rating	IPX5
Bus compatibility	NMEA 2000, NMEA 0183
Wired network	NMEA 2000
Mounting type	Surface-mount
Certifications	CE, IEC 60945
Steering modes	Auto, Wind, Navigation, Zero leeway, Manual helm
Drive unit type	Steering via cable or digital (Volvo, Yamaha, Optimus, Yanmar)
Dual rudder support	Yes, via integration with electronic steering systems (EVC)
NMEA 0183 baud rate	4.8, 9.6, 19.2, 38.4
NMEA 0183 sentences	1 port IN/OUT (4.8, 9.6, 19.2 & 38.4 kbaud)
NMEA 0183 ports	1
Storage temperature	-30 to +70
Browser-based setup	No
Motion correction support	Yes
Alarm output	Yes
Alarm Output Max Current Ma	100
Australian Business Number	96124340898
Boat Type Compatibility	Configurable
Distance de sécurité compas (mm)	500
Courant continu (A)	8
Drive Output Current Max A	3
Drive Output Current Min Ma	10
Drive Output Voltage	12/24 V DC
EMC directive	2014/30/EU
EMC test laboratory	TÜV SÜD America Inc.
EMC test report number	SC1406321
Eu Authorized Representative Address	Navico Holding AS, Nyaaskaiveien 2, NO-4374 Egersund, Norway
Hs Code Full	9014804000
Humidité maximale de fonctionnement	100
Maritime Navigation Standard	Maritime navigation and radiocommunication equipment and systems – General requirements – Methods of testing and required test results.
Nmea0183 Bidirectional	Yes
NMEA 2000 connector type	Micro-C
Nmea2000 Port Count	1
Nominal Drive Voltage Options	12 V, 24 V
Poids emballé	0.208
Courant de crête (A)	12
Poids du produit	0.7
Radiocommunications Standard	Radiocommunications (Electromagnetic Compatibility) standard 2017
RCM declaration date	1 - Nov - 2016
Rcm Declaration Entity Address	Unit 5/12 Mars Road Lane Cove NSW 2066 Australia.
Rcm Declaration Entity Name	Navico Australia Pty Ltd.
RCM declaration signatory	Howard Evans / Operations director
Rudder Feedback Voltage Range	0-5 V
Shock And Vibration Standard	EN60945
Steering System Brand Compatibility	Volvo, Yamaha, Optimus (SEASTAR), Yanmar
Supply Voltage Tolerance Percent	+/- 10-30
Suivi par numéro de série	serial
Vessel Length Compatibility M	Configurable
Warranty	2

Detailed description

Designed for modern electronic steering systems, the Navico NAC-D autopilot computer (part number 000-15621-001) is a dedicated "steer-by-wire" solution. It provides direct integration with electronic engine control systems (EVC) from brands such as Volvo IPS/EVC, Yamaha Helm Master/single engine, SeaStar Solutions Optimus, and Yanmar VC10/JC10. Unlike traditional autopilot computers like the NAC-2 or NAC-3, which require a hydraulic pump and rudder angle sensor, the NAC-D significantly simplifies installation by connecting directly via NMEA 2000 without the need for additional hydraulic components or in-harbor rudder calibration.

Advanced integration and connectivity

The NAC-D stands out with its NMEA 2000 connectivity, featuring two Micro-C ports and 2 LEN for seamless integration into the vessel’s electronic ecosystem. Its design excludes NMEA 0183, Bluetooth, or Wi-Fi support, focusing on reliable CAN-bus communication for Optimus steering systems. The device is powered via the CAN network (9–16V) with a typical consumption of 40mA, making it energy-efficient. Control can be managed via dedicated controllers such as the AP 44 or AP 48, or integrated into compatible Simrad multifunction displays.

Performance and steering features

This computer integrates Navico’s Continuum Steering technology, ensuring precise and reliable course-keeping. The SteadySteer™ function optimizes rudder performance across different points of sail by automatically switching between two speed profiles. The NAC-D offers an extensive range of advanced turning patterns, including U-turn, spiral turn, zigzag, C-turn, box turn, S-turn, and depth tracking (Depth Counter Tracking). With an IP44 ingress protection rating, a weight of 0.1 kg, and compact dimensions (86.5 x 20.0 x 11.5 mm), it installs discreetly inline with the cable, requiring a 0.5-meter safety distance from the compass.

Documentation

Type	Nom
	EN - Installation and Commissioning Manual
	EN - Installation Guide
	EN - Installation Guide
	EN - Installation Manual
	EN - Installation Manual
	EN - EC Declaration of Conformity
	EN - Declaration of Conformity
	EN - Declaration of Conformity RCM
	EN - EC Declaration of Conformity EMC
	EN - EC Declaration of Conformity
	EN - Installation Guide

Expert opinion

Pol CONIN

Digital Manager

« Digital intelligence for modern electronic steering systems »

Navico's NAC-D represents a significant evolution in autopilot computer technology, specifically designed for steer-by-wire steering architectures and electronic engine control systems (EVC). Its practical value is maximized for boat owners with modern propulsion systems like Volvo IPS, Yamaha Helm Master, SeaStar Optimus, or Yanmar, who seek to integrate an autopilot without the complexity of traditional hydraulic systems.

From an installation perspective, the NAC-D greatly simplifies the process. It does not require adding a hydraulic pump, installing a rudder angle sensor, or even performing dockside rudder calibration. Its integration is primarily via the NMEA 2000 network, with only two Micro-C connectors to plug in. This significantly reduces installation time and complexity compared to NAC-2 or NAC-3 computers, which are intended for conventional hydraulic steering systems. It is crucial to note that the NAC-D is not a universal solution; the vessel must already have a compatible electronic steering system for this computer to function.

The NAC-D's differentiation lies in its role as a direct digital interface between the autopilot and the engine's electronic steering system. It does not "control" a pump but sends precise digital commands to the existing EVC system. This makes it particularly suitable for modern powerboats where space is often limited and where the reliability of a fully digital control chain is sought. However, its main limitation is its dependence on a pre-existing EVC system; it cannot be used to convert a hydraulic or mechanical steering system into an autopilot without a major rudder overhaul.

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NAC-D Autopilot Computer

$999.88 USD

$999.88 USD ~~$1,335.09 USD~~

Frequently Asked Questions

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What is the NAC-D autopilot computer used for?

The NAC-D is the decision-making core of your autopilot system. Unlike classic models, it is specifically designed to directly control electronic and digital cable-driven steering systems, delivering exceptionally precise steering.

With which steering systems is the NAC-D computer compatible?

This computer is optimized for modern electronic steering systems. It is notably compatible with Volvo, Yamaha, Optimus (SeaStar) and Yanmar steering systems.

What is the difference between the NAC-D and the NAC-2 or NAC-3 models?

The NAC-2 and NAC-3 controllers are designed to deliver high power (up to 750 W) to drive hydraulic pumps or mechanical actuators. The NAC-D, by contrast, is dedicated to direct control of digital steering systems, which do not require this level of output power.

Does the NAC-D support the SteadySteer function?

Yes, the NAC-D natively supports the SteadySteer assistance technology. This allows you to take manual control at any time to make a heading correction without needing to disengage the autopilot beforehand.

Which turning modes are supported by the NAC-D autopilot?

The NAC-D offers advanced navigation algorithms with multiple turning models: Spiral, Zigzag, Continuous turn rate. It also automatically adapts to the vessel's dynamics via its profile transition function between low and high speed.

Which steering systems is the NAC-D autopilot computer compatible with?

The NAC-D autopilot computer is designed to be compatible with several popular steering systems. According to the documentation, it is compatible with:

Volvo®, Yamaha®, Optimus® (SEASTAR®), Yanmar®. It is important to note that for some of these systems, the helm can only be actuated when the engine is running.

What are the essential steps for installing and commissioning the NAC-D autopilot computer?

Commissioning the NAC-D autopilot computer involves several critical steps to ensure proper operation and optimal performance:

The units must be mounted and secured according to the specific installation instructions.The network must be powered and wired according to the provided wiring instructions.The required data sources must be selected via the autopilot control unit documentation.The boat must be configured by entering its characteristics (type, length, cruising speed, etc.).The autopilot control units must be configured and calibrated.The compass must be accurately calibrated.A sea trial adjustment must be performed (manually or using the Autotune function) to fine-tune autopilot performance.

What is the warranty duration for the Navico NAC-D autopilot computer?

The Navico NAC-D autopilot computer comes with a standard 2-year warranty from the date of purchase. This warranty covers manufacturing and material defects under normal operating conditions.

With which steering systems or engines is the NAC-D autopilot computer compatible?

The NAC-D autopilot computer is designed to be compatible with multiple marine steering systems and engines. It supports electronic steering systems from brands such as:

Volvo® Yamaha® Optimus® (SEASTAR®) Yanmar® Please note that for some of these systems, the engine may need to be running to turn the wheel.

Which electronic steering systems is the NAC-D autopilot computer compatible with?

The NAC-D autopilot computer is designed to be compatible with several modern electronic steering systems, including:

Volvo®, Yamaha®, Optimus® (SEASTAR®), Yanmar®. It is important to note that for some of these systems, the wheel can only be maneuvered when the engine is engaged.