Garmin GPSMAP 8500, Owner'S Manual

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Viewing Tide Station Information
on the chart indicates a tide station. You can view a detailed
graph for a tide station to help predict the tide level at different
times or on different days.
NOTE: This feature is available with premium charts, in some
areas.
1
From the Navigation chart or Fishing chart, select a tide
station.
Tide direction and tide level information appear near .
2
Select the station name.
Animated Tide and Current Indicators
NOTE: This feature is available with premium charts, in some
areas.
You can view indicators for animated tide station and current
direction on the Navigation chart or the Fishing chart. You must
also enable animated icons in the chart settings ( Showing Tides
and Current Indicators , page 7 ).
An indicator for a tide station appears on the chart as a vertical
bar graph with an arrow. A red arrow pointing downward
indicates a falling tide, and a blue arrow pointing upward
indicates a rising tide. When you move the cursor over the tide
station indicator, the height of the tide at the station appears
above the station indicator.
Current direction indicators appear as arrows on the chart. The
direction of each arrow indicates the direction of the current at a
specific location on the chart. The color of the current arrow
indicates the range of speed for the current at that location.
When you move the cursor over the current direction indicator,
the specific current speed at the location appears above the
direction indicator.
Color Current Speed Range
Yellow 0 to 1 knot
Orange 1 to 2 knots
Red 2 or more knots
Showing Tides and Current Indicators
NOTE: This feature is available with premium charts, in some
areas.
You can show static or animated tide and current station
indicators on the Navigation chart or Fishing chart.
1
From the Navigation or Fishing chart, select Menu > Layers
> Chart > Tides & Currents .
2
Select an option:
• To show animated tide station indicators and animated
current direction indicators on the chart, select Animated .
• To enables the tides and current slider, which sets the
time for which tides and currents are reported on the map,
select Slider .
Showing Satellite Imagery on the Navigation Chart
NOTE: This feature is available with premium charts, in some
areas.
You can overlay high-resolution satellite images on the land or
on both land and sea portions of the Navigation chart.
NOTE: When enabled, high-resolution satellite images are
present only at lower zoom levels. If you cannot see high-
resolution images in your optional chart region, you can select
to zoom in. You also can set the detail level higher by changing
the map zoom detail.
1
From the Navigation chart, select Menu > Layers > Satellite
Photos .
2
Select an option:
• Select
Land Only to show standard chart information on
the water, with photos overlaying the land.
• Select Photo Map to show photos on both the water and
the land at a specified opacity. Use the slider bar to adjust
the photo opacity. The higher you set the percentage, the
more the satellite photos cover both land and water.
Viewing Aerial Photos of Landmarks
Before you can view aerial photos on the Navigation chart, you
must turn on the Satellite Photos setting in the chart setup.
NOTE: This feature is available with premium charts, in some
areas.
You can use aerial photographs of landmarks, marinas, and
harbors to help orient yourself to your surroundings or to
acquaint yourself with a marina or a harbor prior to arrival.
1
From the Navigation chart, select a camera icon:
• To view an overhead photo, select
.
• To view a perspective photo, select . The photo was
taken from the location of the camera, pointed in the
direction of the cone.
2
Select Aerial Photo .
Automatic Identification System
The Automatic Identification System (AIS) enables you to
identify and track other vessels, and alerts you to area traffic.
When connected to an external AIS device, the chartplotter can
show some AIS information about other vessels that are within
range, that are equipped with a transponder, and that are
actively transmitting AIS information.
The information reported for each vessel includes the Maritime
Mobile Service Identity (MMSI), location, GPS speed, GPS
heading, time that has elapsed since the last position of the
vessel was reported, nearest approach, and time to the nearest
approach.
Some chartplotter models also support Blue Force Tracking.
Vessels being tracked with Blue Force Tracking are indicated on
the chartplotter with a blue-green color.
AIS Targeting Symbols
Symbol Description
AIS vessel. The vessel is reporting AIS information. The
direction in which the triangle is pointing indicates the
direction in which the AIS vessel is moving.
Target is selected.
Target is activated. The target appears larger on the chart. A
green line attached to the target indicates the heading of the
target. The MMSI, speed, and direction of the vessel appear
beneath the target, if the details setting has been set to Show.
If the AIS transmission from the vessel is lost, a message
banner appears.
Target is lost. A green X indicates that the AIS transmission
from the vessel is lost, and the chartplotter displays a
message banner asking whether the vessel should continue
to be tracked. If you discontinue vessel tracking, the lost
target symbol disappears from the chart or the 3D chart view.
Dangerous target in range. The target flashes while an alarm
sounds and a message banner appears. After the alarm has
been acknowledged, a solid red triangle with a red line
attached to it indicates the location and the heading of the
target. If the safe-zone collision alarm has been set to Off, the
target flashes, but the audible alarm does not sound and the
alarm banner does not appear. If the AIS transmission from
the vessel is lost, a message banner appears.
Charts and 3D Chart Views 7