-------- Original Message --------
Subject:        Question about Nautical Charts Online
Date:   Mon, 17 Jun 2013 11:26:44 -0400
From:   Fry, Michael <[log in to unmask]>
To:     Maps, Air Photo, GIS Forum - Map Librarianship
<[log in to unmask]>



In the latest edition of MAGIRT's Baseline [1], David Bertuca reviews
OceanGrafix's Nautical Charts Online [2], a spatial index and viewer for
nautical and bathymetric charts.

Nautical Charts Online is easier to use than both NGA's Chart Viewer [3]
and NOAA's bathy chart index and viewing tools [4]. Like NGA's Chart
Viewer, Nautical Charts Online also restricts preview access to most
charts in int'l waters. But unlike NGA's Chart Viewer, the charts you
/can/ preview include those from NGA's Region 6 (Eastern Africa and
Southern Asia).

And that's my question. Why does NGA restrict previews of the same
charts that Nautical Charts Online--a service of one of NGA's own
commercial chart resellers--allows users to fully preview?

Just curious.

mf

===============
Footnotes/URLs

1: http://www.ala.org/magirt/publications/baseline/
2: http://www.nauticalchartsonline.com/
3: http://www.nauticalcharts.noaa.gov/mcd/NGAChartViewer.html
4: http://www.ngdc.noaa.gov/mgg/bathymetry/maps/nos_intro.html

--
Michael Fry
Senior Map Librarian
National Geographic Society
1145 17th St. N.W.
Washington, D.C. 20036
202.857.7098
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