Raytheon Electronics ST6000 Plus, Owner'S Handbook Manual

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16 ST6000 Plus Autopilot Control Unit Owner’s Handbook
Cross track error
Cross track error (XTE) is the distance between the current position
and a planned route. This is displayed in nautical miles (nm), statute
miles (SM) or kilometres, and is taken directly from your navigator.
The Large XTE alarm sounds if the XTE exceeds 0.3 nm
• The direction of the error is identified as “Pt” port or “Stb”
starboard.
• To cancel the alarm and leave track mode, press
standby
to return
to hand steering, or
auto
to return to Auto mode.
Note: If the Large XTE alarm sounds, it is usually an indication that
the cross tide is too great for the vessel’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
vessel speed when computing course changes to ensure optimum
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