The National Geophysical Data Center has downloadable bathymetric and fishing maps for most of the US ocean coastline (not intended for navigation purposes, though). Map catalogs are broken down by geographic region, and maps are available in both small PDF preview format and large format downloads in either PDF or TIF format (the latter in gz compression, which will require an unzipping program like WinZip or ZipGenius). If you need the PDF maps in a editable graphic format, you can use a program like PDFCreator to “print” the PDF maps in full-resolution TIFF, JPG, or PNG formats. Maps are also not georeferenced (not GeoTiffs or GeoPDFs); I hope to cover some basic georeferencing options soon.
The full sets of data available from the NGDC include more bathymetric and relief data, geology/geophysical data, and earthquake/volcano data.
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
I would like to see a method of taking these free bathymetric charts and making them into the geo-referenced BSB format so they could be used with many navigational programs. Is there anything you know of that could do this?
Have you seen this post?
http://freegeographytools.com/2008/downloadable-updated-noaa-raster-navigation-charts