Simrad AP28 Operator's Manual page 20

Display legend
Power boats
On power boats the automatic selection of HI or LO is
determined solely by the speed of the boat as shown in
the diagram above.
Sailboats
When sailing in WIND mode, the parameter set is
determined by the speed of the boat and the direction of
the wind as per below.
So if you loose too much speed e.g. when tacking, the
parameters will change to HI to gain sufficient rudder
response. This should be observed when setting the
transition speed on sailboats. See also Wind response
on page 22.
20 | Operation
Speed
26
24
22
20
18
16
14
12
10
8
6
4
2
0
HI-A High response parameters set automatically
LO-A Low response parameters set automatically
HI-M High response parameters set manually
LO-M Low response parameter set manually
Transition to LO parameters
with increasing speed: 10 Knots
Transition Speed set to 9 Knots
Transition to HI parameters
with decreasing speed: 8 Knots