Chapter 3: Advanced Operation
23
3
Adv
anc
ed Opera
tio
n
If the cross track error is greater than 0.3 nm, the will sound
the Large Cross Track Error alarm and shows whether you are to the
port
(Pt)
or starboard
(Stb)
of the planned track.
To cancel the Large Cross Track Error alarm:
•
press
standby
to return to hand steering, or
•
press
auto
to return to Auto mode and retain the current heading
Note: When the Large Cross Track Error alarm sounds, it usually
means that the cross tide is too great for your boat’s current speed.
Tidal stream compensation
Under most conditions, Track mode will hold the selected track to
within ±0.05 nm (300 ft) or better.The autopilot takes account of the
boat’s speed when computing course changes to ensure optimum
performance over a wide range of boat speeds. In order of preference,
the uses:
•
measured boat speed (speed through water)
•
if this is not available, it uses the speed over ground (SOG)
•
if this is not available, it uses the cruise speed specified in Dealer
setup (see page 112)
D3261-2
Waypoint 2
Waypoint 1
Tidal component
Boat's speed through w
ater
Boat's speed over ground
Summary of Contents for autopilot ST4000+
Page 2: ...ST4000 Wheel Tiller Autopilots Owner s Handbook Document number 81131 6 Date August 2001 ...
Page 5: ...iv ST4000 Wheel Tiller Autopilots Owner s Handbook ...
Page 13: ...xii ST4000 Wheel Tiller Autopilots Owner s Handbook ...
Page 14: ...Part 1 Using the ST4000 Part 1 Using the ST4000 ...
Page 15: ...Part 1 Using the ST4000 ...
Page 47: ...32 ST4000 Wheel Tiller Autopilots Owner s Handbook 3 Advanced Operation ...
Page 56: ...Part 2 Installing the ST4000 Part 2 Installing the ST4000 ...
Page 57: ...Part 2 Installing the ST4000 ...
Page 79: ...64 ST4000 Wheel Tiller Autopilots Owner s Handbook 5 Installing the ST4000 D286 2 D E D287 2 ...
Page 115: ...100 ST4000 Wheel Tiller Autopilots Owner s Handbook 6 Setting up the ST4000 ...
Page 135: ...120 ST4000 Wheel Tiller Autopilots Owner s Handbook ...
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