CR40/42/50 MKII C-MAP attributes Appendix C
164
Tide information
To gain access to the tide information, you first have to located the tide symbol –
a shape of a diamond with a T in the middle – on the chart. Place the cursor on
the symbol, and press
[ENT].
The info window (see previous page) will appear on the screen. Press
[2]
Chart
info to call up the Tide height information.
In most places there are two high and two low tides per day. The heights of the
high tides, or the low tides, may not be the same. The height of the tide varies
with the time of year.
Object name is the location name of the Tide station.
Time zone: -1 indicates that the local time is 1 hour less than the standard time
in London (GMT).
The low and high tides are shown for one day at a time. The 24-hour time
schedule will always run from 00 hours to 24 hours each day. The information
provided will always be for the present day.
However, if you wish to see the low and high tides for a different date – in the
past or in the future – it is possible to change the date:
Day In the display there will be a red box cursor on the number of the
day in the month. Toggle to a different number (date) with the +/-
keys.
Month Use the cursor to go to the present month. Toggle to a different
month with the +/- keys.
Year Use the cursor to go to the year. Toggle to a different year with the
+/- keys.
The last four lines in the Tide display will inform of Begin Twilight, Sunrise,
Sunset and End Twilight for the present day.
Caution
The tide information system is quite accurate. However, the predictions are
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