NorthStar 972, Quickstart Manual And Reference Manual

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Reference section 9 — Alarms and TideTrack
TideTrack™ Northstar 972
The entire U.S. coastline — including Alaska
and Hawaii — is covered, plus many Carib-
bean islands and eastern and western
Canada. Data can be displayed only for
chart regions that have been activated.
Tides can be displayed for any date up to
the year 2100. Data is from the official
tide-table predictions and should be about
as accurate as the printed tables.
The TideTrack screen
The name of the selected NOAA tide
station and the selected day are shown at
the top of the screen.
A graph of the water height for the
selected tide station during any 24-hour
period is displayed.
Press the cursor pad left or right to move a
horizontal measurement line to any spot
on the tide graph. The line is labelled with
the exact height that it represents.
Press the cursor pad up or down to
advance or go back one day at a time.
Mean Lower Low Water (MLLW) is shown
as a solid line near the bottom of the
graph. A contrasting vertical line is
displayed at the current time.
Just below the tide graph is the time scale,
showing the vessel’s local time for each
point, or (if
Time Zone
has been pressed to
select
At Station
) the local time at the tide
station.
At the bottom of the screen, the times of
high and low tides are listed for that loca-
tion, along with the tide height at the time
indicated by the vertical line.
Choosing a nearby tide station
Select the closest tide station by pressing
Closest station
, or choose from any of the
nine closest tide stations as follows.
1. On the Tide Track screen, press
Pick from
list…
The 972 searches for stations closest to
your present position and displays this list
with the closest station at the top.
Tide Track screen