26 ST60+ Speed Instrument Owner’s Handbook
Set resolution
Select resolution of either 0.01 or 0.1 as required.
Set log units
Select either NM (nautical miles), SM (statute miles) or KM (kilometers), as
required.
Setting the correct speed
Set the displayed (current) speed using one of the following methods:
• If SOG is available from SeaTalk, use the Adjust to SOG screen to automati-
cally set the current speed to. You must be running in slack tide conditions to
successfully use this method.
• Manually apply a calibration factor by means of the Cal factor adjust screen,
to set the displayed speed value to your best estimate of the vessel’s speed.
If neither of the above methods is suitable, use the
Speed calibration
procedure
described under
Intermediate calibration
to carry out a speed calibration run over
a measured distance. This enables the instrument to calculate the correct
calibration factor.
Adjust to SOG
The Adjust to SOG screen is displayed only if SOG data is available from SeaTalk.
The current SOG is displayed in the top right of the display (12.8 in the
illustration), and the current speed registered by the instrument is shown as large
figures (12.4 in the illustration).
It is recommended that, if you are running in slack tide conditions, you press the
reset button for 3 seconds, to accept the SOG as the current speed. The
calibration factor is automatically re-calculated.
If you do not wish to accept SOG as the current speed, simultaneously press the
timer and reset buttons to select the Cal factor adjust screen.
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