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Initiating a turn
The illustration below shows how you start the spiral turn steering from the Autopilot
menu.
You select the turn direction and start the turn by tapping the left or right keys or by using
the OP40 rotary knob.
Stopping the turn
You can at any time during a turn press the OP40 STBD/AUTO key to return to standby
mode and manual steering.
Turn variables
All turn steering options, except the C-turn, have settings that you may adjust before you
start a turn and at any time when the boat is in a turn. Refer to the example above.
U turn
U-Turn changes the current set course to be 180° in the
opposite direction.
The turn rate is identical to default rate of turn (ROT) setting.
This cannot be changed during the turn.
C-turn
C-turn makes the boat turn in a circle.
You can adjust the turn rate (ROT) before the turn is
initiated and during the turn. Increasing the turn rate
makes the boat turn a smaller circle.
Turn parameter
Rate of turn (ROT)
Spiral-turn
Spiral-turn makes the boat turn in a spiral with a decreasing or increasing radius. This
feature may be used for circling fish or when searching an object.
If the Change radius is set to zero, the boat will turn in a circle. Negative values indicate
decreasing radius while positive values indicate increasing radius.
Turn parameter
Initial radius
Change of radius per turn
Autopilot |
NSO-II Operator Manual
Range
Change per step
10 - 600
5
Range
Change per step
33 ft - 3281 ft
10
10 m - 1000 m
10
-164 ft - +164 ft
5
-50 m - +50 m
2
Default
Units
90
°/min
Default
656 ft
200 m
66 ft
20 m
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