Celestial Video Courses

The completely free Reginasailing celestial navigation courses

Choose between a 3-minutes summery video, a 90 Min “fast-track-all-you-really-need-to-know” course or the full 10+ hours course covering everything celestial you need to know for your Yachtmaster Ocean Theory. Do it in self-study, just for the fun of it, or get inspired to join a 6-days Regina Laska classroom course in Malta!  

The Quick-Course would be sufficient in order to use your sextant as a backup and was the general preferred method used by thousands of cruisers during pre-GPS times. It doesn’t have to be more complicated than that! This so called “sun-run-sun” method is actually all you need to know in order to navigate safely by sextant and is also what your RYA Yachtmaster examiner will ask you for. 

Scroll down for the individual free celestial Reginasailing courses. 

What else can you do?


In Classroom Course

Rather than working through the entire course in solitude, come and join like-minded during an in-classroom course doing the entire RYA Yachtmaster Ocean Theory.

This is also the only way to obtain the necessary RYA theory certificate that you need for your RYA Yachtmaster Ocean exam. And besides, these courses cover much more than just celestial navigation and is great fun, since we’re all talking and learning ocean sailing!

See here for next course dates. 



Buy the templates

The simple to use Reginasailing templates have helped hundreds of sailors to understand the individual steps for sight reduction. I started to develop them in the 1990’s so I would remember myself and they have now become available for purchase. They are great for learning and remembering, leading you step by step in a logical way through the steps of sight reduction or twilight planning (for stars and planets). They cover all celestial bodies for the RYA Yachtmaster Ocean course.

The most important templates are published by renown sextant manufacturer Cassens&Plath here and are available as printed writing pads. The Reginasailing plotting sheets you can buy from Cassens&Plath here. Don’t forget your discount code (“Reginasailing10”)  if you shop anything in Cassens&Plath’s online shop. Templates can also be purchased from Toplich here.

If you are interested in the entire range of templates used in the below free celestial video course (i.e. templates for twilight determination, moon, planets, stars, compass check) including necessary sight reduction tables, you can also  contact me to receive them as pdf’s for own print-outs for a contribution via Revolut or PayPal. 


Practical Celestial Sailing Leg

You may wish to join a practical celestial sailing leg onboard Hallberg-Rassy 46 Regina Laska, practicing the skills of actually doing it with a sextant at sea. We use the state-of-the art Horizon Ultra Sextant by Cassens&Plath doing the sun-run-sun exercises in real.

These are also necessary to bring to your RYA Yachtmaster Ocean exam, if you thrive to take it one day. 




My Templates, Tables, Almanacs etc

While watching the videos, you might get interested in obtaining all the necessary course material, including all used tables as well as Almanacs (until 2026!) and sight reduction tables for all celestial bodies. 

You might especially be interested in the  special templates I have developed for the sun, moon, planets and stars! These are not only helpful for understanding celestial navigation during the course, but especially as a help to remember how it worked. They are structured and guide you step-by-step how to find your position!

With the templates you are ready to go! They are extremely popular and I am happy to share them for a small contribution to my work. 

How to download the templates

Send me an e-mail to get the course material as well as the templates in PDF formate.

For a small contribution I will e-mail you a link to the said material, including my newest updated versions of the shown templates. Most people send me some 50-70 EUR/USD via PayPal or Revolut or make a SWIFT-Bank transfer. 

All I ask for is to please use them responsibly, i.e. not sharing freely to others or using them comericially. Once downloaded, anyone who has made a contribution may freely print them for their own sole use as often as you wish. 

What others said....

"Unfortunately, I only discovered your youtube videos today as I was unlucky enough to purchase a course online. 
I admit that I ve got difficulties to understand, not the way we work with all the calculations but for the reason why we are doing them. Your videos on Youtube are the reason that I am more motivated now. I wish to purchase your templates."
Despina Psoma, Grecey

What others said....

"I have been working through your excellent videos on You Tube in preparation for an upcoming delivery and as a refresher.  By far the best and easiest to understand that I have come across and all in your unique style and ability to deliver complex information in a concise and enjoyable way, that makes sense."
Jake Adams, Crew for Halcyon Yacht Delivery

What others said....

"I have to hand it to you, your instruction is incredible!

I originally learned celestial navigation doing yacht deliveries in the late 1970s and 1980’s. I thought I’d look for a refresher on YouTube, and certainly got one while watching your videos. Your format forms appear to be particularly helpful.

 I’m happy to pay for the templates!"

Peter Cullum

1. The superfast overview:
The idea in a nutshell in just 3 minutes

Celestial Theory in 3 Minutes

2. The Quick-Course:
Theory in 90 Minutes plus two practical Sun-Run-Sun videos using the Reginasailing Templates

Intro to the Quick Course

Quick-Theory Part 1 (2)

Quick-Theory Part 2(2)

Practical: Sun-Run-Sun explained

Practical: Celestial Training to the Azores

3. The full celestial course:
All Astro you need to know for your RYA Yachtmaster Ocean

Celestial Theory Part 1: Introduction

Celestial Theory Part 2: Errors on the sextant

Celestial Theory Part 3: The basic principles

Celestial Theory Part 4: Understanding Noon Sight

Celestial Theory Part 5: Corrections to get a true observed altitude

Celestial Exercise for Part 5: Get a true observed altitude

Celestial Theory Part 6: Time-to-Arc

Celestial Exercise for Part 6: Time-to-Arc

Celestial Theory Part 7: Declination

Celestial Exercise for Part 7: Noon Sight

Celestial Theory Part 8: The mystery of the PZX-Triangle

Celestial Ex. for Part 8: Finding the Position Line by shooting the sun

2nd Celestial Exercise for Part 8: Sight Reduction step-by-step

Celestial Theory Part 9: New application of The Running Fix

Exercise for Part 9: Make your own chart with a Plotting Sheet!

Celestial Theory Part 10: Twilight and Planets

Exercise for Part 10: Use my template to pre-calculate twilight!

Celestial Theory Part 11: Choosing the right planets!

Exercise for Part 11: Choosing the right planets!

Celestial Theory Part 12: The stars and Aries!

Exercise for Part 12: Choosing the right stars!

Celestial Theory and Exercise Part 13: The 2102-D Starfinder

Celestial Theory Part 14: The (almost) stable star to the north!

Celestial Exercise for Part 14: Planing for Polaris!

Celestial Exercise for Part 14: Shooing stars&planets at twilight!

Celestial Exercise for Part 14: Plotting twilight shots!

Celestial Exercise: A complete twilight planning&shooting!

Celestial Theory Part 15: The Moon and why it comes last!

Celestial Exercise for Part 15: The Moon!

Celestial Theory Part 16: The Compass Check!

Celestial Exercise for Part 16: Deviating your compass!

Part 17 Practicality: Receiving and precerving accurate time

Part 18 In Practice: Sun-Run-Sun explained

Part 19 In Practice: Sailing to the Azores using celestial navigation