Spiral turn
Spiral-turn makes the vessel turn in a spiral with a decreasing or
increasing radius. This feature may be used for circling fish or when
searching an object.
You set the initial radius before the turn is initiated, and the change
per turn during the turn. If the change per turn is set to zero, the
vessel turns in a circle. Negative values indicate decreasing radius
while positive values indicate increasing radius.
Zigzag turns
Steers the vessel in a zigzag pattern.
For navigating in a zigzag pattern, you set the initial heading
change before the turn is started.
During the turn you can alter the main heading, the heading
change, and the leg distance.
Square turn
Makes the vessel automatically turn 90° after having travelled a
defined leg distance.
You can at any time during the turn change the main heading and
the distance of the leg until the vessel makes a new 90° turn.
Lazy S-turn
Makes the vessel yaw around the main heading.
You set the selected heading change before the turn is started.
During the turn you can alter the main heading, the heading
change and the turn radius from within the turn dialog.
Depth contour tracking, DCT
TM
If the system has input from an echosounder, the autopilot can be
set to follow a depth contour.
Warning: Do not use this feature unless the seabed is
suitable. Do not use it in rocky waters where the depth
is varying significantly over a small area.
Autopilot | GO7 Operator Manual
69
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