Garmin 010-10680-50 Blue Chart User's Guide - Page 19

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 13