Garmin GPSMAP 238 Sounder - Manual (Page 82)

72
Reference
Main Menu: Tide Tab
Tide Tab— shows a graphical chart that displays tide station information in a 24-hour span starting at
midnight station time. You can choose from different dates and over 3000 tide stations around the USA
coastline, Alaska, Hawaii, western Canada and several of the Caribbean islands.
The top of the page displays the tide station being referenced, below that the date. The top of
the chart shows a 24-hour block of local time (LCL) for your position, with the reported station time
(STA) appearing at the bottom. Daylight (light/yellow bar) and nighttime (dark/blue bar) show across
the time scale, with the time progressing from left to right. (Local time scales and sunrise/sunset info
may not be available for a few stations). The solid, light vertical lines are in 4-hour increments, and the
light, dotted vertical lines are in 1-hour increments. A solid, vertical line (with the current time box at
the top) will indicate the time of day when using current date and will intersect the tide graph to show
their relation.
The tide curve shows as a shaded area, with higher tides being taller and lower tides shorter. The
solid, horizontal line (with the current tide box on the left) indicates the current tide height. The fi gure
to the left of the line will show the current tide level in feet. The Mean Lower Low Water (MLLW)
appears as a solid, horizontal line near the bottom of the chart (This line will only appear if the tide
ranges to the zero value or below). The numbers directly below/above ‘LCL’ and ‘STA’ indicate the
maximum/minimum levels, respectively. The four data fi elds below the chart, indicate event times and
levels at which the tide changes starting in the upper left fi eld, going downward, then to the upper
right and down again.
Main Menu—Tide Tab
Station Name
Date
Tide Chart
Event Times
You can select from a list
of nearest stations.
Local Time
Station Time
Day
Night
Current Time Bar
Max. Level
Min. Level
Current Tide Height Bar
High Tide Curve Low Tide Curve
188188C238 Manual Part 2.indd 72 6/30/2003, 3:32:22 PM