- The History of the Sextant - http://www.mat.uc.pt/~helios/Mestre/Novemb00/H61iflan.htm
Transcript of a talk given at the Science Museum of The University of Coimbra. Includes photos of ancient devices.
- The Seamans Secrets - http://www.mcallen.lib.tx.us/books/seasecr/dseasec1.htm
Text from a book originally printed in 1657 that discusses tides, declinations, and other marine navigation topics.
- The Columbus Navigation Homepage - http://www1.minn.net/~keithp/
The history, navigation, and landfall of Christopher Columbus. Includes a timeline of the life and voyages of Columbus.
- Traditional Navigation in the Western Pacific - http://www.museum.upenn.edu/navigation/Intro.html
Covers the role, techniques, and tools of the Carolinian navigator. From the University of Pennsylvania Museum of Archaeology and Anthropology.
- The History of the Sextant - http://pwifland.tripod.com/historysextant/
The evolution from the earliest instruments to the sophisticated devices used today described and illustrated.
- Understanding How Thompson Navigated - http://www.northwestjournal.ca/dtnav.html
About David Thompson's exploration of western Canada and the northwestern United States from 1790 to 1812, using a sextant and compass. From the Northwest Journal.
- Evolution of the Sextant - http://www.westsea.com/tsg3/octlocker/octchart.htm
Illustrated article including details about dating. Links to antique instruments offered for sale.
- Escape from Antarctica - http://www.pbs.org/wgbh/nova/shackleton/navigate/escape.html
Recreates the navigation Ernest Shackleton's crew used on their voyage seeking rescue.
- John Harrison and the Longitude Problem - http://www.nmm.ac.uk/server.php?request=setTemplate:singlecontent&contentTypeA=conWebDoc&contentId=355&viewPage=1&navId=005001000002
The problem, the man, the clocks and the prize. Online exhibit at Royal Observatory Greenwich.
- Navigation Instruments - http://beatl.barnard.columbia.edu/students/his3487/cantrell/presentation1.html
Brief descriptions, thumbnails, links to other resources.
- Longitude at Sea - http://galileo.rice.edu/sci/observations/longitude.html
Describes 17th and 18th century use of eclipses of Jupiter's moons to identify position.
- Viking Navigation - http://www.wam.umd.edu/~eowyn/Longship/viking.nav.html
Summary from the last chapter of The Viking by Howard La Fey.
- The Viking Sun Compass - http://www.griffithobs.org/IPS%20Planetarian/IPSViking.html
How the Vikings found their way back from New York 1000 years ago
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