BRIS MINI SEXTANT DIY.

This KZbin channel is about me an 83 and 11/12 year old dyslectic solo sailor building a 20 feet canoe yawl for a long high latitude cruise.
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For more see Yrvind.com

[@Goldengloberace]

SVEN you are a champion and a real inspiration!!!...you have inspired me since your first stories in Cruising World Magazine bound for Cape Horn in the 70's and ever since!! ...from those days as I was building my BIG 29ft yacht I would draw little boats!! ,,,50 year later I finally got my "little" Globe 5.80mtr ply epoxy "TREKKA" and soloed the Atlantic and thought of you! so thanks :) ..We told a few thousand people about your Mini Sextant some days ago...which has always amazed me...and now they can make their own..awesome so happy sailing to you and thanks for making many so happy!! ....good luck!!! ..Don

[@SvenYrvindExlex]

Proud to inspire you. Will be interesting to see how my boat fares in the roaring forties. I spent about one year there. 4 months sailing 4 months on Tristan and 4 months cruising the Falklind Islands. I have great hope for her. Best regards Yrvind.

[@friedaspyder8485]

Patrick Mitchell, has three videos on the Bris design. Theory, Construction with glass slides, and more discussion on the interference patterns seen. I was thinking, a little jig could be developed and 3d printed, pretty easily. i'll add, that Patrick has some suggestions re: Yrvind's design too.

[@friedaspyder8485]

And Eric Taylor, has a two piece construction video, that has some nice through the lens shots, and bonus cat footage.

[@juansimon7020]

Yrvind has the time AND the passion wich makes him a very rich man

[@papounet4842]

I wish people in charge of teaching and educating our youth take into account how you manage to explain so well things with both simplicity and passion. Might make them less desperate and the world a bit better. I had a professor of maths who was a bit like you for explanations (but not a sailor for sure) and the very little I understood, I owe him a lot.

[@cornishhh]

It's even more impressive to do this in a language which isn't your first.

[@pointnemo72]

🎉 just noticed the 20k subs. This is excellent!

[@gregrudzinski]

I will confirm that the Bris sextant works as designed and can be made as Sven is showing. I have made several using microscope slide glass, camera UV filters, and two part epoxy. Calibration from a known position takes some time but only needs to be done once. I get 2' precision out of all the home made versions which is surprisingly good for something so small.

[@akcarlos]

“Believe me, my young friend, there is nothing-absolutely nothing-half so much worth doing as simply messing about in boats.” im sure everybody knows this quote from wind in the willows

[@DavidD6969]

This is something I've been wanting to learn. I hope you will make more videos about this ..like how to make and alot more information on how to use it ,👍

[@isserfiq]

Patric Mitchel has some detailed tutorial videos on the subject on his channel. www.youtube.com/@patrickmitchell9829/videos

[@melinda5777]

Thank you for this instructional videos. ❤ Capt'n Sven, was wondering if you could give a shout out that FREEDOM is being given away. (From the sailing channel SAILING INTO FREEDOM. They have to follow the instructions and make a video.

[@AM-es5up]

😎🤘

[@markgamble7699]

❤

[@pointnemo72]

Are there specific angles that the glass has to be positioned at before gluing together?

[@SvenYrvindExlex]

No Try to make an useful angle. One that you chose with the ordinary sextant. Depends a bit on the latitude you sail and the time of year. One in morning one around noon.

[@pparnanen]

Even if the pieces are assembled badly the calibration method takes care of that. en.wikipedia.org/wiki/Bris_sextant

[@pointnemo72]

@@pparnanen thanks for the link👍. Pretty cool there's a Wikipedia page about this.

[@gregrudzinski]

I have had good luck with 22mm squares of cut microscope slides glued with two part clear epoxy and shimmed with 2mm and 0.7mm pencil leads. The 8 sun reflections are about equal spread up to 32 degrees of altitude. The 5 dim sun reflections do not need shading. To shade the 3 bright reflections just hold a dark sunglass out in front and above to shade the incoming sun for a comfortable look at the 3 bright sun reflections.

[@ocean_capable_small_sailboat]

Congrats on 20K subs!

[@niceoscar]

I have made an essey (in swedish) on how to calibrate the Bris sextant. I first had to understand celestial navigation and that makes the essey quite large. The last chapter explains how to calibrate the Bris sextant and can be useful if you go for it. Let me know if you want a copy.

[@SvenYrvindExlex]

Thanks But I let other people try to understan celestial navigation

[@Itssmial_Ova]

An English translation would be awesome

[@PauloNeuenschwander]

Vad kul! Jag är intresserad av det. Kan du skicka det till mig?

[@niceoscar]

@@PauloNeuenschwander Det kan jag om jag får din mail. Det är en PDF på 6,6 MB

[@niceoscar]

@@Itssmial_Ova If you know celestial navigation i guess you could translate the wordings in the last chapter. If not it is too large to translate for me atm due to time.

[@Itssmial_Ova]

If it weren't for the availability of GPS Yrvind would justifiably be a household name in the sailing community. The ingenuity of a mini-sextant that can be created so easily (Compared to the ancient method) I'm so that to have discovered your channel and videos.

[@sammyvh11]

Congrats on 20 k subscribers. Now the algorithim will really take off.

[@isserfiq]

Detailed tutorial on building the mini sextant on Patric Mitchell's channel. www.youtube.com/@patrickmitchell9829/videos

[@mattevans-koch9353]

Peter's office chair looks awfully comfortable Sven. Thank you for the information on the Bris sextant. Have a good week.

[@silverfazer8290]

thats pretty cool

[@danielsondavidf]

2 0 K

[@doyouwanttogivemelekiss3097]

"Position, time and altitude - if you know two, you can calculate the third" - so in fact, I do need a Rolex *and* a bris sextant 😂

[@SvenYrvindExlex]

Or a Timex. Tick tack Timex one is made every secound That was what they said in the 70s There are cheap quarts watches also now

[@doyouwanttogivemelekiss3097]

In all seriousness, the.bris sextant is amazing. I wish more people would practice navigation - not just sailors.

[@kendonahue2080]

Thanks for your information on your Bris sextant Sven. I'll put some thought into that. It fits my criteria for entry into my boat ... Small, simple, reliable, repairable and inexpensive. That is very generous of you !! Also I appreciate your recent ideas on the relative environmental cost of build bearing in mind the life expectancy. Bearing the last factor in mind GRP in construction over the last 50 years may have been quite beneficial in big picture especially when done with good design and execution.