Navionics Gold

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November 28th, 2009 admin Leave a comment Go to comments

info on Reading Marine Charts?

Does anyone know a site that has any info on reading marine charts?
I just bought a gps with the Navionics gold + card.
Im unsure what the two numbers mean (I know its depth but no clear on the two number)
Also not sure why some areas are in white and others in blue.

Sounds like you may need someone to show you about GPS and nautical charts.
GPS screens give lots of information – location in latitude and longitude, water depth , navigation ads, tidal information, some of the newer charts even have coast pilot information build in.
On a marine chart water is shown in several colors, with white as deeper water, blue is shallow. There is sometimes shades of blue for varying depths. You should also see the depth contours – depending on your detail.

Here is a web site that has some useful information:

http://boatsafe.com/nauticalknowhow/chart101.htm

http://boatsafe.com/nauticalknowhow/charts.htm

You may want to take a course on GPS or Boat Navigation.

Good Luck – Boat Safe !

Edit:
cheap keyboard – make spelling mistakes all the time