Garmin 010-C0325-00 - MapSource BlueChart - Halifax Manuel de l'utilisateur - Page 19

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To view tides and marine services information on your Garmin unit:

1. Select and download the desired tide and marine services maps the same way

you would with MapSource BlueChart maps.

2. To display the same marine properties information found in MapSource on your

Garmin unit, place the map cursor on the desired symbol, and press ENTER.

Understanding the Differences Between Electronic

and Paper Charts

Occasionally, boaters notice that the BlueChart data does not duplicate a particular

feature shown on the paper chart they are using. Garmin uses the best charts available

and carefully turns the paper charts into a digital format for display on an electronic

screen. If there are errors, omissions, or discrepancies on paper, they might occur

electronically too.

On paper charts, sometimes even large features like a breakwater might not be shown

clearly or at all. Large breakwaters are sometimes not shown on the harbor charts, but

are shown on coastal charts—or vice versa! These decisions are made by the chart

maker, such as NOAA/NOS. In some cases, bridges, or other features washed away in

storms decades ago, are still shown on the paper charts. Recent changes in coastlines

are often not reflected on paper charts for years.

The same is true for new marinas and ports. Sometimes, well-known local landmarks

might be shown so small on the paper chart that they are indistinguishable from

Blue Chart User's Guide