ASA 107, Celestial Navigation | Modern Sailing

ASA 107, Celestial Navigation

6 evenings, Tues / Wed / Thurs

Since ancient times, human beings have looked to the heavens to find our way around on Earth. It was only a few hundred years ago that we developed systems to plot latitude and longitude fixes based on the positions of celestial bodies, and the common practice of celestial navigation by means of a sextant emerged. The basic premise of celestial navigation relies on calculating angles between the observer, the horizon, and a predictable celestial body such as the sun, moon, or visible planets and stars.

In the modern age, we’ve become dependent on highly precise and user-friendly navigation technology – but technology can fail – and then what? For safety and self-sufficiency, celestial navigation remains an essential skill for every ocean-going mariner.

With the ASA 107 course, you will learn to:

  • apply celestial navigation theory and practices for safe navigation of a sailing vessel in offshore waters;
  • use the sextant to determine your vessel position by the Local Apparent Noon method; and
  • deduce your location with sun, moon, planet and star lines of position and fixes.

Your Celestial Navigation textbook, Star Finder Book, and Nautical Almanac Commercial Edition are included with the purchase of your course and will be mailed to you. If you prefer to pick up your course materials in person or if you signed up less than a week from the first day of your course, please contact our office. Advance study of these books will enhance your success in this course.

If you have ever dreamed of sailing over the horizon, take ASA 107, Celestial Navigation with Modern Sailing School & Club. Have confidence that no matter how far from shore you sail, you will always be able to find your way.

Cost for Members: 
$645
Cost for Non Members: 
$845
Prerequisites: 
ASA 104, Bareboat Cruising ASA 105, Coastal Navigation

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  • David Dolenc, Member

    I love sailing in the San Francisco Bay and greatly appreciate everything that MSC has to offer, the classes, clinics, club sails, racing and charters. I enjoy our supportive sailing community and use every opportunity to spend time on the water. After obtaining the certifications from MSC I did my first charter in Croatia in 2022 with my family. It was amazing and we’re looking forward to returning soon!

  • Sara Jane G.

    I've taken two classes at MSS&C and was very happy with the program. This is also a great club with lots of opportunities for camaraderie and practice on the water. The boats in the fleet are fantastic and kept in tip-top shape. I highly recommend for all sailors and would-be sailors!

  • John Kipping

    The meeting room was quite adequate and the location most convenient, but the course outline and instruction were outstanding. Modern Sailing is fortunate to have such a well organized instructor in Mr. Stan Lander who teaches very well from a rich professional background. Mr. Lander was generous with his time and patiently in helping students who needed more attention or time in understanding various aspects of the curriculum.

  • Mike, Santa Rosa, California

    All of the courses and my instructors (JT and Stan) were extremely professional and full of knowledge and experience. I found I was able to learn from their experiences beyond the scope of the courses, and look forward to future opportunities to do so. I would highly recommend Modern Sailing to anyone.

  • John Clark

    Every aspect of Modern Sailing - training, syllabus, course materials, quality of the boats, quality of the instructors, and the very friendly and helpful staff - exceeded my expectations. Modern Sailing has a first class sailing program in an environment with challenging winds and currents. I look forward to coming back to charter a boat and certainly plan to continue my sailing training.

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Modern Sailing School & Club

Sausalito Location
2310 Marinship Way, Sausalito
(415) 331-8250
(800) 995-1668

Berkeley Location
1 Spinnaker Way, Berkeley
(415) 331-8250
(800) 995-1668

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