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a virtual port of call for all those who love the sea , hosted by nautical novelist Rick Spilman

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Home→Tags sextant

Tag Archives: sextant

Navigating to the Moon — Remembering the Apollo Sextant

Posted on July 21, 2019 by Rick SpilmanJuly 21, 2019

Sailors have navigated by the stars since the dawn of time. Now, fifty years after Neil Armstrong first set foot on the Moon in the Apollo 11 mission, we shouldn’t forget that even the Apollo astronauts relied on sextants to … Continue reading →

Posted in Current, History, Lore of the Sea | Tagged Apollo 13, Jim Lovell, moon, Neil Armstrong, sextant

Repairing Sextants in the Age of GPS

Posted on May 22, 2017 by Rick SpilmanMay 23, 2017

I first arrived in New York harbor forty years ago, as a freshly minted naval architect working for Moore McCormack. In those days, the Brooklyn docks were crowded with US flag shipping companies, many with their headquarters or sales offices in … Continue reading →

Posted in Current, Lore of the Sea | Tagged GPS, Ridge White, Robert White, sextant

The Threat of GPS Hacking — Brush off Those Sextants

Posted on October 24, 2015 by Rick SpilmanJanuary 14, 2016

In 1998, the United States Naval Academy dropped celestial navigation from its curriculum. If a naval officer wished to know where he or she was, the officer simply had to read the display on a GPS (Global Positioning System) receiver. … Continue reading →

Posted in Current, Lore of the Sea | Tagged celestial navigation, GPS, sextant, US Naval Academy, US Navy
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