Raymarine ST7001 GPS Receiver User Manual


 
18 ST7001+ Smartpilot Controller Operating Guide
Safety in Track mode
CAUTION:
Track mode provides accurate track keeping even in complex
navigational situations. However, it is still the skipper’s responsibility to
ensure the safety of their boat at all times through careful navigation and
frequent position checks. Track mode assists precise navigation and
removes the tasks of compensating for wind and tidal drift. However,
you MUST still maintain an accurate log with regular plots.
2.2 Using Wind Vane mode – sail boats
Note: You can only select Wind Vane mode if the SmartPilot is receiving
suitable SeaTalk or NMEA wind direction information.
What is Wind Vane mode?
When the SmartPilot is in Wind Vane mode it uses the fluxgate compass as
the primary heading reference. As changes in the true or apparent wind angle
occur, it adjusts the locked heading to maintain the original wind angle.
Wind information
To use Wind Vane mode, the SmartPilot must receive wind information from
one of the following sources:
SeaTalk wind instrument connected to the autopilot via SeaTalk
NMEA wind instrument
Raymarine pushpit wind vane connected via a SeaTalk interface
True and apparent wind
SmartPilots can maintain a course relative to either an apparent or true wind
angle in Wind Vane mode
The default setting is apparent wind. If required, you can change this to true
wind in User Calibration (see page 25).
WindTrim
In Wind Vane mode the SmartPilot uses WindTrim to eliminate the effects of
turbulence and short term wind variations. This provides smooth and precise
performance with minimal power consumption. You can adjust the wind
response (WindTrim) level in User Calibration (see page 25) to control how
quickly the SmartPilot responds to changes in the wind direction. Higher