i know how to read the lat and long what does each square represent a mile ?
charts i have are "home port" charts and have alot of info on them to learn from. chart #6 will show long island to sandy hook out to 50 nmiles. also i have somethign i will email to you, you will need adobe to open it http://www.homeportcharts.com/chartinfo.php?id=chart6
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