NAC-1 Precision Hydraulic Pilot pack, MKII Pump-1

The Simrad NAC-1 MKII Pump-1 precision hydraulic autopilot pack is a complete and reliable autopilot solution designed for hydraulic-steered vessels up to 9 meters (30 feet). It provides accurate course-keeping and seamless integration with compatible Simrad multifunction displays, as well as Lowrance HDS Elite/FS displays.

The Simrad NAC-1 MKII Pump-1 pack includes the following essential components:

A NAC-1 autopilot computerA 0.8-litre PUMP-1 (MkII) hydraulic pumpA Precision-9 heading sensorA Standby-Auto buttonMicro-C network components for NMEA 2000® connectivity

This autopilot pack is designed for vessels equipped with a hydraulic steering system, up to 9 meters (30 feet) in length.

The NAC-1 computer is the heart of the system. It integrates Continuum™ Steering technology for stable autopilot performance and ensures precise course holding. It also supports Simrad Virtual Rudder Feedback technology.

The PUMP-1 (MkII) hydraulic pump included in the pack is a reversible 0.8-litre model. It operates at 12 V and delivers a nominal flow rate of 0.8 Lpm (litres per minute). Its model number is 000-11770-002.

Yes, the Simrad NAC-1 system is designed to integrate seamlessly with compatible Simrad multifunction displays, enabling intuitive control and display of the autopilot.

Yes, the Simrad NAC-1 MKII Pump-1 pack is compatible and can be integrated with Lowrance HDS Elite/FS displays for a unified navigation experience.

Yes, the pack includes a Precision-9 heading sensor. This sensor is essential for providing accurate heading data to the NAC-1 autopilot computer.

No, the NAC-1 computer supports Simrad Virtual Rudder Feedback technology. This feature eliminates the need for a separate rudder feedback unit, particularly useful on outboard-powered boats.

The PUMP-1 (MkII) hydraulic pump requires a 12-volt power supply to operate correctly.

To ensure optimal performance of the PUMP-1 pump, the minimum recommended wire gauge for its power supply is AWG 12 (equivalent to 4.0mm²).

For the hydraulic installation of the pump, it is recommended to use annealed copper tubes with an outer diameter of Ø3/8" (North American: Type L ASTM B88), with a minimum wall thickness of 0.030".

The NAC-1 computer uses Continuum™ Steering drive technology, which ensures stable and reliable autopilot performance.

Yes, the pack includes Micro-C network components, essential for the NMEA 2000® connectivity of the autopilot system with other marine electronic devices on board.

For a hydraulic steering ram displacement between 98 and 131 cm³ (6-8 cu.in), the 'Hard Over to Hard Over' (HO to HO) time expected with the PUMP-1 pump is 9 to 15 seconds.

The PUMP-1 pump has a typical current draw of 4 to 7 amps. Its peak current can reach 11 amps at 50 bar.

Yes, this pack is well suited to outboard-powered boats, particularly thanks to the NAC-1 computer’s support for Simrad Virtual Rudder Feedback technology, which simplifies installation by eliminating the need for a physical rudder position sensor.

The total weight of the Simrad NAC-1 MKII Pump-1 pack is 6.3 kilograms.

The Standby-Auto button supplied with the pack allows quick and easy switching between the autopilot's 'Standby' and 'Automatic' modes, giving the user direct control.

If the 'Hard Over to Hard Over' (HO to HO) time of your steering system is excessive, this may indicate that the hydraulic pump is undersized for your boat’s steering cylinder. In this case, you would need to select a pump with a higher capacity.