Charting the New Hampshire Lakes since 1967®
Central Lakes Region | Lake Winnipesaukee | Winnisquam Lake | Newfound Lake | Ossipee Lake | Squam Lake | Lake Sunapee
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Frequently asked questions
NEW!
Bizer says there is no difference between navigating on the lakes and navigating on the oceans? Is there?
NEW!
Why don't your charts have precise buoy projections?
NEW!
"Bizer continues to have the most accurate depth information of Lake Winnipesaukee and Lake Winnisquam....This feature is not on any other chart of these lakes." True?
NEW!
"Bizer features the only chart of these lakes that has accurate latitude and longitude grid markings..." True?
NEW!
"U.S. Geological Survey map accuracy standards are that 90% of all data points be within 0.5 mm (1/50 inch) of their true scale location. Only Bizer meets those standards." True?
NEW!
Buoys and their Numbers
NEW!
What do all the various buoys tell me?
How do I decide whether to buy the green chart by Duncan Press or a competitor's map?
Why isn't the "new" Duncan Press chart the same as the "Old Green Map?"
Why aren't the buoy's positions on the chart accurate?
I heard that the Marine Patrol Dispatch has ONLY Duncan Press Winnipesaukee charts on it's walls. True?
Why isn't the "new" Duncan Press chart the same SIZE as the "Old Green Map?" Why is it so much bigger?
I'm confused. Why aren't the numbers on the actual buoys on the lake?
I miss the depths on the Old Green Map. Why did you change them?
I was disappointed to find that (the Bizer chart) . . . did not have Lat and Lon scales on the borders . . . Does your paper map of the lake have this detail?
What's all this flap about "accuracy?" Should I care?
What is
metadata
, and why should I care?
Can I use my GPS (Global Positioning System) equipment with your charts?
Why do you show depth contours on your charts?
How exact are the depth contours?
Does your chart show all the rocks in the Lake?
Why don't your charts use a Mercator projection?
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©2010, Duncan Press, Inc.
Charting the New Hampshire Lakes Since 1967®
PO Box 1253, Center Harbor, New Hampshire 03226
Last modified 5 February 2010