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The US Government's guide to marine navigation. I came here looking for information on how a sextant is used, and ended up reading through the whole thing - it's fascinating. The sections on LORAN and on the unique problems of navigating in the Arctic are particularly interesting...
to arctic gps loran maritime navigation retrotech sextant shipping ... on 21 November 2018
Welcome to MapServer — MapServer 6.2.1 documentation edit / delete
For that homebrew satnav project... this can generate map images on the fly from various sources, including OSM.
to cartography graphics maps navigation osm software ... on 29 July 2013
Jerry Proc's Family of Web Pages edit / delete
Some interesting historical stuff about LORAN and other navigation systems, and random boatanchor radio information and stories.
to history navigation radio retrotech ... on 23 March 2007
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| - navigation | |
| 1 | + arctic |
| 1 | + cartography |
| 1 | + gps |
| 1 | + graphics |
| 1 | + history |
| 1 | + loran |
| 1 | + maps |
| 1 | + maritime |
| 1 | + osm |
| 1 | + radio |
| 2 | + retrotech |
| 1 | + sextant |
| 1 | + shipping |
| 1 | + software |
tasty by Adam Sampson.