B&G Network Pilot (ACP) User Manual
Page 97
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RUDDER GAIN VALUE TABLE
BOAT TYPE
DEFAULT
VALUE
TYPICAL
VALUES
SAIL
BOATS
0.50 0.3
to
1.0
POWER
BOATS
1.25 1.0
to
3.0
NOTE: The factory set value is selected by setting Boat Type and
Rudder Drive Type during commissioning.
BOAT LAG
Boat Lag is the time taken for the boat to respond to changes in helm.
For example, heavy displacement hulls require a larger value for boat
lag.
1. Engage the autopilot as previously explained in Initial Pilot Sea Trial.
2. At a speed not exceeding 15 knots, change course by 90
°
in each
direction.
3. Observe the autopilot steering performance. The boat should turn
onto the new heading with minimal overshoot (a slight overshoot is
acceptable).
4. If the overshoot is consistently more than 5
°
for course changes in
both directions increase the Boat Lag value in steps of 0.1 until the
overshoot is corrected.
5. It is easier to observe overshoot than undershoot, hence if no
overshoot is observed decrease the boat lag in steps of 0.1 until a
small overshoot is seen.
6. Use the smallest value of Boat Lag to stop overshoot.