NorthStar 961 Reference Manual page 262

Chapter 12 - Alarms, TideTrack, Currents, and Echo Sounding
Adding the tide
overlay
Page 12-12
To add tide-station information to the CHART screen:
1. At the CHART screen, press the OVERLAY key, then press
the SHOW TIDES key.
If tide stations are in the area, they're displayed on the
CHART screen, the GRAPH ON key appears, and a
STATION COVERAGE bar (replacing an INFO BAR)
shows today's date and the number of stations within the
coverage area.
If the STATION COVERAGE bar says there aren't any
stations in the coverage area, press the OUT key to zoom
out to a wider coverage area (the GRAPH ON key will
appear). If the STATION COVERAGE bar says there are
too many stations, press the IN key to zoom in to a
smaller coverage area (the GRAPH ON key will appear).
In either case, you can also press the CURSOR PAD to
change the coverage area.
Chart screen with tide stations and station coverage bar
961/962 Operations and Reference Manual, Rev. A