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AC42 Autopilot Computer with 15m SimNet Cable


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Model # 11494556 | Mfg # 22097091
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The autopilot computer is the main unit in the Simrad AP24 and Simrad AP28 autopilot systems.

It contains the steering computer and electronics for the drive unit motor and clutch and provides interface to other system components. Two models, AC12 (8/16 A motor current) and AC42 (30/50 A motor current) are available. They communicate on the proprietary SimNet data and control network to establish a reliable digital communication and power distribution between the units in the autopilot system as well as other Simrad products.


SimNet provides high speed data transfer and control of Simrad products integrated in a total steering and navigation system. The compact SimNet enabled Simrad AC42 autopilot computer is more powerful than ever and include all of the control functions expected from a Simrad autopilot. Compatible with hydraulic and mechanical steering systems, they incorporate position and navigation data from the GPS chartplotter and wind, speed and depth data from the instrument system. The output is a smooth proportional control of the rudder with the utmost precision providing excellent steering performance an any sea condition with a minimum of power consumption.

Autopilot / Autosteering

  • Course Change Rotary Knob Yes
  • One Degree Keys D
  • Ten Degree Keys D
  • Heading Capture In Turns Yes
  • DODGE: Return to last or new heading Yes
  • Automatic Turn Patterns Yes
  • Follow Up Power Steering Yes
  • Depth Contour Tracking Yes
  • Rudder Angle Bar Graph Yes
  • Remote Station Lock Yes

Technical / Environment

  • Width 211 mm \ 8.3 in
  • Height 60 mm \ 2.4 in
  • Length 180 mm \ 7.1 in


  • Dedicated Mode Keys Yes

AC42 Autopilot Computer with 15m SimNet Cable

Best Use Power/Sail Course Computer for Vessels Over 40 Feet
Connection Interface SIMNET
Features Robust and Precise Steering Performance
High Current Capable to 30 Amps Continuous
Type Course Computer
Warranty Details Two Years

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