Understanding ‘Distance to Line’
Once you have set (pinged) both ends of the starting line the ProStart connects these two points in a
straight line of infinite length. The ProStart calculates distance to line as its perpendicular distance to the
infinite start line.
The ends of the line should be set when the bow of your boat is on the line. When you set the ends of
the line, approach each ping in the same direction you would if you were approaching the line to start
the race.
Pinging without the bow offset
Pinging without the bow offset, the ProStart calculates distance to line as the perpendicular distance
from its current position to the straight line between its positions at the time of your line set pings.
The illustration below provides a graphical definition of distance to the start line and how you can set it
when you are not using the bow offset.
Pinging with the bow offset
Pinging with the bow offset, the ProStart calculates distance to line as the perpendicular distance
between the bow of your boat and the start line.
The illustration below provides a graphical definition of distance to the start line and how you can set it
when you are using the bow offset.
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