History
Links
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
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.
Longitude at Sea
http://es.rice.edu/ES/humsoc/Galileo/Things/longitude.html
Describes 17th and 18th century use of eclipses of Jupiter's moons to identify position.
Secrets of Ancient Navigation
http://www.pbs.org/wgbh/nova/longitude/secrets.html
An overview from the PBS show "The Search for Longitude".
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.
Medieval and Twentieth Century Navigation
http://www.jsc.nasa.gov/er/seh/navigate.htm
Methods and equipment used by Columbus and by the Apollo astronauts described, compared, and contrasted.
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
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.