Simrad AP70 Operator's Manual page 23

Immediate heading change
Set heading is adjusted by turning the rotary knob (press and rotate simultaneously if the Turn
Preset function is activated), or by pressing the PORT or STBD keys.
An immediate heading change will take place, also if the heading change is more than 180°.
The new heading will be maintained until a new heading is set.
Temporary course changes
If you need to avoid an obstacle when in
power steer or use the helm until the obstacle is passed.
If you re-press the AUTO key within 3 minutes you can select to continue on previous set
heading. If you don't respond within 3 seconds the menu will disappear. The autopilot will go
AUTO
to
NoDrift
This mode the vessel is steered along a fictive track line, from present position to infinity in
a direction set by the user. If the vessel is drifting away from the original course line due to
current and/or wind, the vessel will follow the line with a crab angle.
1.
Steer the vessel onto the desired course
Press the AUTO key to activate
2.
-
The autopilot will draw an invisible track line based on current heading from the vessel's
position
The autopilot will now use the position information to calculate the cross track distance, and
Wind/
automatically keep your track straight.
Current
¼ Note:
It is not possible to select
The NoDrift mode info panel
A.
Set CRS: Set course and Header repeater unit (True or Magnetic)
A B.
COG: Course over ground
C.
SOG: Speed over ground
-
B C
If SOG is missing, the speed info will be taken from log (STW). Speed can also be set
manually from the Quick menu (MAN)
Changing set course
Set course is adjusted by using the rotary knob or the PORT/STBY keys.
•
Turn the rotary knob (press and turn simultaneously if the Turn Preset function is activated)
-
The course is changed with 1° for each step made by the knob
• Press the PORT or STBD key
-
The course increment is set by the user, and can be 10, 5, 1 or 0.1° (default is 1°). See
"Setting the heading and course change increments" on page 24
An immediate course change will take place, also if the course change is more than 180°. The
new course will be maintained until a new course is set.
The Turn preset feature
The system includes a turn preset feature for
the new heading/course, turn radius and turn type before the turn starts. The function gives
a more precise starting point for the turn, and it also avoids unintended heading/course
changes when accidentally turning the rotary knob.
¼ Note:
function is active.
The operational modes |
mode with current heading as set heading.
NoDrift
NoDrift
The PORT and STBY keys will always give immediate action, also when turn preset
AP70/AP80 Operator Manual
AUTO mode, you can press the STBY key and
mode
if position or heading information is missing.
AUTO NoDrift
and mode. This allows for setting
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