Icom IC-M510 Instruction Manual page 73

z Slow Warn
The GPS receiver calculated COG data
of a vessel that is at anchor or drifting
is unreliable, and therefore the CPA
and TCPA data may not be calculated
correctly. If a vessel is anchored in your
alarm zone, the unreliable data can
cause the collision alarm to sound many
times, even if there is no real danger.
To prevent this, when the anchored
vessel's SOG is less than this set value,
the Slow Warn function assumes that
vessel's COG is fixed towards your
vessel and an alarm will sound.
• Function
Turn the Slow warn function ON or OFF.
ON: The Slow warn function is turned
ON.
OFF: The Slow warn function is turned
OFF.
• Speed
Set a speed for the Slow warn function
between 0.1 and 4.9 kn (in 0.1 kn
steps).
NOTE: If other vessels at anchor or
drifting come into your alarm zone,
the Slow warn alarm will sound
again. Only if the previous vessel
disappears from the Danger list
(p. 55), and then re-enters the
list, can a new Slow warn or regular
alarm sound, depending on the
vessel's SOG, or CPA and TCPA.
The Slow warn function operates
in the same way if your vessel is at
anchor and other vessels enter your
alarm zone.
AIS FUNCTION
Friends
z Friends List
Displays all Friend targets that you have
entered.
L "No ID" is displayed when there is no
Friend target.
L See page 56 for how to set a Friend.
z Friends Alarm
• Function
You can select whether or not to turn
the following alarm function ON or
OFF when a vessel that is entered into
the Friends List is detected.
ON: The alarm function is ON.
An alarm sounds, and a
popup screen is displayed
when a vessel that is
entered into the Friends list
is detected, regardless of
the set range.
ON
(in range): The alarm function is ON
when a vessel that has
entered into the Friends list
is detected in the set range.
OFF: The alarm function is OFF.
• Audible Alarm
You can select whether or not to sound
the Friends alarm.
ON: The alarm sounds.
OFF: The alarm does not sound.
• Range
Set the range to between
0.1 and 6.0 NM (in 0.1 NM steps) for
the alarm function.
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