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Simrad AP21 - User Manual

Simrad AP21
132 pages
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Simrad AP20 and AP21
Autopilots
ALWAYS AT THE FOREFRONT OF TECHNOLOGY
MANUAL

Table of Contents

Questions and Answers

  • J
    Jenna GrantAug 7, 2025
    What to do if Simrad AP21 autopilot operates on simulated feedback?
    • L
      Laurie BradleyAug 7, 2025
      If your Simrad Marine Equipment autopilot operates on simulated feedback due to rudder feedback failure, it means the rudder feedback signal is either missing or erratic. First, check all connections. Then, check the alignment according to the installation instructions. If the problem persists, replace the rudder feedback unit.
  • R
    Ricardo LivingstonAug 20, 2025
    How to fix a slow rudder test on Simrad AP21?
    • J
      Jacob TuckerAug 20, 2025
      If the rudder test is too slow on your Simrad Marine Equipment, it could be due to excessive load on the steering gear, air in the hydraulic system, or insufficient drive unit capacity. You should: 1. Look for mechanical obstructions at the rudder/tiller/quadrant and check the back drive force. 2. Bleed the hydraulic system. 3. Replace the existing unit with a bigger pump unit.

Summary

2 OPERATION OF THE AUTOPILOT

2.4 Follow-Up and Non-Follow-Up Steering

Explanation of FU and NFU steering modes.

2.8 Automatic Steering

How to engage and use the automatic steering mode.

2.11 Navigating with AP21;AP22

Using the autopilot for navigation with external sources.

2.21 User Set-up Menu

Guide to configuring user settings and parameters.

3 TECHNICAL SPECIFICATIONS

4 INSTALLATION

4.6 Component Installation

Detailed installation for feedback, junction, control units, and sensors.

4.10 Drive Unit Installation

Instructions for installing various drive units.

4.31 Software Setup Procedure

Guide to system configuration via software menus.

4.32 Dockside Settings

Configuration steps performed before sea trials.

4.33 Sea Trial

Procedures for testing and calibrating the system at sea.

5 MAINTENANCE

6 TROUBLE SHOOTING

6.1 Alarm Troubleshooting

Diagnosing and resolving system alarms.

Simrad AP21 Specifications

General IconGeneral
BrandSimrad
ModelAP21
CategoryMarine Equipment
LanguageEnglish

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