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zoomed in to a 6-mile range. The icon stands for a Tidal Current Sta-
tion location. An example is displayed on the right.
When you zoom in to a sufficiently small zoom range (0.8 nautical
mile), the icon becomes an animated arrow showing tidal current ve-
locity and direction for the selected tidal station at the present time. At
larger zoom ranges, you can select the boxed "C" icon and it becomes an
animated arrow with a pop-up name box (the name box disappears af-
ter a few seconds). Examples are displayed in the following figures.
To view Tidal Current information:
1. Use the arrow keys to move the cursor over a Tidal Current Station
icon. When it is selected, a pop-up name box appears.
2. Press
WPT to display the Tidal Current Information screen.
NauticPath chart showing Tidal Current Station icon selected by cur-
sor (left). Icon animates automatically at .08-mile zoom range (right).
The Tidal Current Information screen displays daily tidal current data
for this station on this date at the present time. The graph at the top of
the screen is an approximate view of the flood and ebb pattern for the
day, from midnight (MN), to noon (NN) to midnight (MN). The velocity
scale at the top left side of the graph changes dynamically based upon
the maximum velocity of the current for that day.
Slack water, the period of little or no current, is represented by the
Slack Water Line (SWL). The flood appears above the SWL and the ebb
appears below the SWL. You can look up tidal current data for other
dates by changing the month, day and year selection boxes.
Cursor
lines
Tidal Current
Station icon in
animated mode