Navigation - Plotting with Triangles
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- čas přidán 5. 05. 2015
- Capt. Jeff Sylvia explains the different plotting tools mariners have at their disposal, and weighs their benefits. He then explains how to use plotting triangles on a chart and why they might be easier to use than a roller plotter or parallel ruler.
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I still have my Iversen and Weilback parallel ruler from 1963 when I graduated Copenhagen Navigation School. It has served me well over many years. It has, though now worn somewhat, a couple of very thin "cork" pads on the bottom of each half which keeps it from sliding unintentionally.
I wish I had watched this yesterday before I bought the "Weems" roller plotter. Back to West Marine to exchange for triangles. Thank you for a great clear explanation.
I have always had a fear of triangles. You cured me in ten minutes flat ! Within five minutes of watching this Iwas using triangles with confidence. I am a keen amateur sailor but have been a teacher (of English) forfifteen years. I can honestly say this is the best piece of teaching I've seen in a very long time.Many thanks Captain Jeff.
Weems & Plath just gained another sale of two triangles, lol!! Super easy to follow and the accuracy gain really makes using triangles a no-brainer. Thanks for a great video, you got a new subscriber in me!
Everyone needs professor like u...thnxx a lot...
Capt. Jeff, YOU'RE AWESOME!!! THANK YOU!!!
Amazingly clear and helpful video Capt Jeff, thanks very much!
very interesting.. I just became involved with plotting courses, and I find triangles better than all other gadgets that I purchased .
I found even better way- ECDIS. Joking! Thanks for this useful lesson!
Excellent video. Thanks Captain Jeff. That was very helpful.
Thank you for a crystal clear presentation.
Been using parallels since I was a kid, this old dog learned a new trick. Thanks :)
Wow. I just picked up a set of navigation tools on ebay, and was mostly interested in the slidebar... But since the set also had triangles I figured I should look up how those are used, and this video has sold me on them.
Nice work Capt. Jeff!
Happy to help! thank you sailor
I had to search for this one so thanks for putting it out there, saved me from sweating in class tonight! Cheers
Just a tip that is a habit of mine that I'm keen to share.
For plotting a course or bearings with triangles, place your pencil on the point you're starting on or taking a bearing of and place the triangle touching the pencil. Then run the triangle up keeping the focal point on the meridian so it twists to line up on your course.
They are great and should be the standard plotting tool on all ships.
Love the American enthusiasm
Your voice is so soothing.
Hey Cap. Your roll bar has it's own protractor! ;-)
You are the best! Thank you!
I have always found a roller plotter or parallel ruler to be a nuisance to use because of slippage. Your excellent video convinced me to get a pair of protractor triangles.
Thank you for a simple explanation of a plottimg!!!👍🏻
Thank you for sharing this video sir! You explained these techniques very well!
Great video! This will be extremely helpful in comparing the 3 tools to my Midshipmen.
Nice Capt ... its very usefull ... thank you
Capt Jeff - you have just saved my bacon on a Yachtmaster Course! Thanks a bunch!!!
super n simple tutorial by capt. jeff , thanks !
Excellent instruction as always!! Best on the net!!
Lots of thanks for your clear explanation!
Nice an clear. Thanx Capt. 👍 U learned me to use triangels 👏🙂👍
Thank you Capt for the lesson
Great Video. It's obvious that you know what you are talking about. I would love to see you give more instructional videos. Thanks
Very clear explanation. :) Thank-you.
Excellent presentation, I struggle with the slide rules so hopefully this will help, especially rolling around at sea.
Very informative and clear!
You are awesome, Sir!
Very useful. Thanks Captain.
Yes. Neatly done. I'm sold that.
Nice video.. I am triangle user, It is the best way to plotting :D
Very helpful and clearly explained.
awesome, helped me to recalled how to use it again. thks
Thanks, Captain!
Very clear and concise
Thank you, Captain
thank you capt more power!
Nakasampa ka na barko
Great Instructor.
Terrific! Thanks!
I will be looking into using triangles now! Thanks.
In your example, you could have opened up the parallel ruler to full extension and use the "inside" edges. But triangles are easier.
WWow loved the insturction!!1
Thank you very much ❤
First video and subscribe right away. Your a 💎 very informative.
A very informative video
Very well explanation
Three of my favrite plotting tools are the triangles and the portland course plotter and the vector master, mainly for speed and distance. Reson is simple, they are both vey qwick and easy to use. The only additon i have to make are plotting sheets to help fix a positon on a chart from a gps. so that i do not have to read the side and top scale on the chart.
Gerard .
QLD AUSTRALIA.
I've not used triangles until I saw this video. Thought I'd buy some and give them a try. Looks like I've got a drawer full of stuff to go on eBay now. I'm converted.
At the 8:30 mark you use the second triangle to move the first triangle away from the plotted course to get to the meridian. Might it have been more accurate to hold the second triangle on the plotted course and then slide the first triangle until it's converging lines meet on a meridian. This would allow you to visually check that the first triangle is both directly on the plot line and the converging points line up at the meridian. You could only do it this way if your course is at least somewhat off of due North or south.
Swapping my parallels for another triangle stat!! Thank you! (Does the mermaid have a name? I jealous!"
thanks for that, video
Nice explanations
Well done.
Any chance you have a video that describes how to predict the bearing and range of a light when abeam to starboard?
Often times in drafting the edges are beveled with a hollow under the running surface or with dimples to raise the pattern such that ink can not touch the close fit surfaces and wick down the length of your work leaving a massive puddle. I could not tell the direction of the bevel well in the video, but that is one reason for providing a bevel if on the underneath. The knobs may be on the wrong side for that possible answer to fit the situation though.
Thank you. This was a big help. I had wondered if there was something better than parallel rules.
Great advice!
American penis
Hark
I believe a "combination" of all these tools would be the Power and Sail Squadron ruler... Easy cheap and precise.... Just my 2 cents :-)
Good job
Thanks! Im a new convert
Check out the Portland plotter....
Well done and what I was looking for comparing plotting tools. Do you do online ASA 105? I did not find you when I looked and what I am taking is not as clear as this.
we invite you to check on our website for more information : nmi.edu/
Does anyone abroad use the Japanese Inoue-type triangles by any chance?
where can I aquire all these peices of equipment?
Whats the scale of that chart youve used sir?
Those tech. ❤️
Jeff, a very informative video, thanks. But, can you tell me something, do i have to get those sorts of tattoos you have on your arms to be a 'proper' sailor?
Its kind of necessary. Also a pipe.
Interesting .. i want to learn this
We invite you to check on our website for more information : nmi.edu/
I always like to use triangle ruler 😀
The hell? That is so awesome!
Have you heard of the Breton plotter ?
bingo! Now i know it and can use for only ten minutes of watching
The triangles give the course True, what if the question asks for magnetic course? Do you have you use the Compass Ross for that?
Yes, this technique plots True - the protractor is much more accurate than squinting at the compass rose on the chart, as shown in the video. You then just need to do the math (TVMDC) to calculate the compass course.
Very convincing -- and nice tatts!
Badabing Badaboom!
4:25 How to use the triangles.
where can i buy a good quality one ? i tried ebay and the quality was shit..... i prefer using this over parallel ruler for plotting...
www.weems-plath.com/Products/Navigation-Tools-1/Protractor-Triangle-with-Handle.html
Weems and Plath make good ones
This guy's pretty funny.
... and informative, we hope ...
Recipe = ra-mu-an
Receipt = re-sit
Manao ahoanae = "mah-nao OWN"
Seychellois Creole is the main öanguage of the Seychelles. It is based on French, and hello is bonzour. So it said. Not my word.
Paste = tam-pal
M sugh = "mm sugh"
Tiv
2.2 million
speakers
Capt. Sylvia just wants to sell triangles haha
never seen the "2 triangle" method but it looks good, i always use parallel rules with 24" ruler, or "Protractor with line" i find the protractor with line is very easy because u can mark on the protractor your Dev and Cor and plot
Lmaooo i scrolled through my liked videos and this is my first liked video O,O
Rulers are way less confusing.
"bada bing bada boom"
People that smack while they talk gets on my nerves. But a good instructive video.
Badda bing, badda boom
badabing
Badaboom
So, the point is, that triangles are superior and everything else sucks
Looks like you only need one triangle for everything you just did.
smack smack smack smack... good info though
OH NO IT DOESN'T REEAACCHHHH.
Barabing baraboom.