Garmin GPSMAP 188C Owner's Manual page 51

You can automatically search for the nearest station using a variety
of search locations. You must select a location within 100 nm of
a tide station. If you are not within this range, you see a message
"None Found." Use the Nearest To Other Find option and select a
location closer to a tide station.
GPSMAP 188/188C Sounder Owner's Manual
To select a tide station from the map:
1. When the search results appear, press FIND, and highlight
Tide Stations.
2. Press ENTER, and then press MENU.
3. Highlight Nearest To Other, and press ENTER.
4. Select a location on the map, and press ENTER. A list
appears showing the nearest tide stations.
5. Highlight a station, and press ENTER twice. If the None
Found message appears, repeat steps 1-4 until you find a
station.
To change the date for the tide chart:
1. Using the ROCKER, highlight the On field, and press
ENTER.
2. Enter the date, and press ENTER.
To use the current date:
Press MENU, highlight Use Today's Date, and press
ENTER.
M M > T T
AIN ENU IDE AB
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