NOAA’s Office Of Coast Survey has downloadable copies of regularly-updated RNCs (Raster Navigation Charts). The updated charts are in BSB format, not supported by many GIS and graphic software programs, but there’s a list of links to free and demo software packages capable of displaying BSB files in georeferenced format (like Caris EasyView and GPSNavX). The site indicates that NOAA will issue GeoTiff versions of these charts at some unspecified point in the future, but those charts will not be as regularly updated as the BSB charts will. Selection is either by chart number or a graphical viewer (requires Java):
To choose a chart for downloading in the graphical viewer, click the “Selection Mode” button at the top, then click on the rectangle defining the chart area (clicking inside the rectangle does nothing). Click “Add To Cart” at left, which adds it to a list of charts to be downloaded. When you’re done selecting charts, click on “Place Order”, and follow the directions to get a zipped copy of the BSB chart (response time to the button-pushing may be slow):
Native map projection for the georeferencing is Mercator NAD83, in meters.
Other posts in the Topographic Maps series
- Free Soviet Military Topographic Maps Of Europe And Asia
- Updated USGS 24K Topographic Maps From The US Forest Service
- Identify And Download USGS 24K Topographic Maps In Google Earth
- Mexican National Atlas
- The USGS Seamless Data Distribution System
- Topographic Maps, Satellite Photos And Vector Data For Israel And Jordan
- Free Digital Geographic Data For Canada
- Google Earth Library Now Open
- Google Maps With A Topographic Overlay
- News About “Hey What’s That” Panorama And Viewshed Site
- Two Google Mapplets From The “Hey What’s That” Site
- Free 10-Meter UTM SDTS 24K DEMs
- USAPhotoMaps: Additional Capabilities
- Downloading USGS Topo Maps In GeoPDF Format, And The GeoPDF Plug-In
- Downloadable US Bathymetric And Fishing Maps
- Full Index Of 1:250K US Army Topographic Maps
- Downloadable Updated NOAA Raster Navigation Charts
- Reproject NOAA BSB Raster Navigation Charts And Export Them In TIFF Format
- Topographic Map Symbols for Historic Topographic Maps
- List Of Map Products From the USGS
- New GeoPDF Features
- Topographic Maps Of North Korea
- A Look At The New USGS Quad Format
Hello,
For info the 1018 nautical raster maps from NOAA stored in the GeoGarage spatial image web server can be viewed seamless as an overlay layer in Google Maps :
http://demo.geogarage.com/noaa
–
Peio Elissalde