Introduction
20169223D 1-1
1 INTRODUCTION
1.1 General
To day Simrad manufacture a complete range of autopilots for all
types of vessels, from leisure boats up to advanced steering systems
for merchant marine vessels. Our factory for these products –
branded Robertson – is located in Egersund, on the south-west coast
of Norway. The company's involvement in autopilots began in 1953
with equipment for the North Sea fishing fleet.
The AP9 MK3 autopilot described in this document is based on
predecessor, the AP9 MkII. The major changes are on the hardware
to comply with IMO resolution 694 (17) and the Marine Directive
(Wheelmark). The hardware changes are compatible with the AP9
MkII.
1.2 MK3 System Layout
The complete AP9 MK3 system layout is shown in Fig. 1-1
A number of configurations can be made from the complete system
layout, and certain standard systems are shown in separate figures.
The relationship between control signals, mode signals and the
different versions of distribution unit are shown in the standard
system drawings.
The combinations of heading sensors are shown in Fig. 1-5.
1.3 Options available with the standard system
The AP9 MK3 system has a series of options that can be specified,
allowing the autopilot system to be configured to suit virtually any
particular vessel.
Optional equipment:
• Dual station
This is a second control unit for remote control of the main station
functions
• Non Follow Up (NFU) steering lever with mode selector and lock
mechanism
• Follow up (FU) steering lever with mode selection
• Rudder angle indicators
• Watch alarm
• Thruster control/second parameter set; i.e. the ability to control
either a thruster or both the rudder and thruster simultaneously.
This option requires a special interface board in the Distribution
Unit.
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