Over the past few years I have taken all of the Celestial Navigation courses taught by Frank Reed at ReedNavigation.com and I recently repeated Modern CN 1 & 2 just for the pure enjoyment that it brought to me.
My interest in CN started a few years ago as I puzzled over how the stars could be used to find one’s position on the earth. I tried to learn CN through self-study, but I couldn’t make the subject matter interesting and realized that this was not the correct approach. You need a skilled instructor that can guide you through the learning process, and that’s what Frank Reed provides.
In a relatively short period of time I had a solid grounding in CN. Frank has unmatched knowledge of CN. His classes are fun, interesting, and sprinkled with historical context and include as much or as little math as you desire. His visual aids were very helpful and the time spent on discussing how to properly use a sextant to take a sight was beneficial. You will learn how to find stars in the night sky by which to navigate. The downloaded course guide is very concise and includes tables that are valid for 5 years into the future.
You don’t need to be at sea to do CN. I live inland and learned in the class how to do land-based navigation with a sextant, either with a large or small body of water to provide a true horizon, or with no water horizon at all.
Going back 250 years, I understand how CN was practiced through the ages, up to the present time with calculator, equations and tables. Thanks to Frank, I take great satisfaction in knowing that I possess a skill that very few people have. I highly recommend his courses.
Homer R. Smith M.D.
Advanced Celestial
Winter / Spring 2026:
This is not your grandparents' celestial navigation! In this workshop we focus on celestial for the 21st century, applying traditional sextant sights to modern ocean sailing. In Advanced Celestial we continue directly on the modern sight analysis from Modern Celestial using the streamlined ABC algorithm, and we learn how to find general position fixes from the Sun and also star sights under all conditions. We'll also learn key aspects of the intercept method with Pub.249 Selected Stars tables for fixes.
If you're dreaming about a trans-oceanic voyage or a circum-navigation, in this workshop you'll learn all the techniques to determine latitude and longitude anywhere on Earth using the Sun and key navigational stars. We learn how to adjust celestial lines of position for vessel motion and synchronize Sun and star sights taken at different times for a running fix.
Many navigators give up on the stars and never learn to identify even the brightest like Vega, or Arcturus, or Canopus, let alone Alpheratz or Zubenelgenubi! By the end of this course, you'll know reliable methods and tricks for identifying more than two dozen of the key stars of celestial navigation, enough to sail the globe with confidence for decades. Valuable as much in coastal navigation as in mid-ocean, a navigator who knows the stars follows a perfect compass all night long.
All workshops: $ 149 per person, per workshopCreated and taught by Frank Reed, celestial navigation and astronomy consultant on the team that found Shackleton's "Endurance" in 2022. Also a recent guest expert in celestial navigation on Neil deGrasse Tyson's StarTalk on The National Geographic Channel.
- Nine hours of class sessions.
- Before this workshop: Modern Celestial is strongly recommended.
- Some math you'll need: Introductory algebra concepts and a little basic trigonometry; strong familiarity with latitude and longitude.
- Recommended for ages 18 and up, students as young as age 13 welcome.
- You'll need to purchase the recommended scientific calculator for the class: the Casio fx-260 Solar (original or newer "II" model). These are widely available for less than $15 at Walmart, Staples, and other stores.
If you're registered for an online workshop, you're invited to attend hour-long sextant practical sessions in Rhode Island and Connecticut scheduled as weather and other factors permit. These live, in-person sessions are included in your registration for online classes.
Comments:
Homer Smith wrote: 10👍
Philip M. Sadler wrote: 85👍
What a joyful and stimulating experience to enroll in Frank Reed's class, Celestial Navigation: 19th Century Methods. Frank is a skillful and engaging teacher, able to draw students into this fascinating subject, whether they be novice or experienced. His depth of knowledge is tremendous. Participants get a real taste of what it was like to be aboard a sailing ship of the day. I learned much to enliven my own teaching and decode 19th century ship's logs. It is a rare experience, indeed, to have so much thoughtfulness, enthusiasm, and fun packed into two days. This is the way to learn!
Philip M. Sadler, Ed.D.
F.W. Wright Senior Lecturer in Celestial Navigation
Harvard University Astronomy Department
Cambridge, MA
Philip M. Sadler, Ed.D.
F.W. Wright Senior Lecturer in Celestial Navigation
Harvard University Astronomy Department
Cambridge, MA
Doug MacPherson wrote: 23👍
I recently took online versions of Frank Reed's "Celestial Navigation in the Age of Sail", and "Lunars - Finding Longitude by Lunar Distances". I couldn't have been more happy with them. Having originally learned post WWII celestial methods as an officer in the United States Navy, and taken it up as a hobby, I was quite familiar with that era's procedures. However, I was intrigued by how they managed prior to then. Frank's two classes filled that void. His vast knowledge of the subject, both the technical aspects of the work as well as the historical significance were perfectly balanced. These are classes that can be thoroughly enjoyed by both the novice as well as the well versed practitioner. Recipe's for doing the work, the science behind those recipes, and actual voyages by the sailors that practiced the art were all presented with wonderful clarity. If "time sights", "cleared lunar distances" or "apparent time" have ever roused an interest, you owe it to yourself to take one of Frank's classes.
Doug MacPherson
Lieutenant, USN sep.
Doug MacPherson
Lieutenant, USN sep.
