Navigation - Plotting with Triangles

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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[@imgoinghome2639]

The instructor's approach simplifies the material and makes it easy to understand. His recommendations prevented me from spending hundreds of dollars on unnecessary equipment that complicated things more. Should we ever cross paths, I'll gladly buy you a drink. Thanks, Northeast Marine Institute, for this video.

[@megbrooks]

Love this guy. Love when he says “oh no it doesn’t reach!” Every time I’m navigating on charts and it doesn’t reach I hear his voice in my head.

[@seanhesketh9471]

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.

[@RossWilliamsDC]

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.

[@roycruspero1747]

😊1😊😊❤

[@cosmolee7902]

Nice lesson! Just FYI for anyone watching this - only 1 triangle is necessary. The demos here used 2 triangles, but the examples could be done with a straight edge (ruler, etc) substituting for the second triangle. This would save the cost of having to have buy a second triangle just to be able to parallelize movements around a chart.

[@southernpaths2986]

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!

[@herbrothermel]

very interesting.. I just became involved with plotting courses, and I find triangles better than all other gadgets that I purchased .

[@LeighWilliamatgoogle]

Excellent video. Thanks Captain Jeff. That was very helpful.

[@deaconallan]

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.

[@captmarc]

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!

[@nmi-edu]

Happy to help! thank you sailor

[@yojimbos1]

Thank you for a crystal clear presentation.

[@mrTheHud]

Amazingly clear and helpful video Capt Jeff, thanks very much!

[@MrVishalmariner]

Everyone needs professor like u...thnxx a lot...

[@tuancharlie1]

I had to search for this one so thanks for putting it out there, saved me from sweating in class tonight! Cheers

[@joecastanza9822]

Capt. Jeff, YOU'RE AWESOME!!! THANK YOU!!!

[@alexnewman8793]

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

[@CletusLeonardLee]

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.

[@johnsmith-uf6ev]

Your voice is so soothing.

[@Йурег]

I found even better way- ECDIS. Joking! Thanks for this useful lesson!

[@snobird583]

Been using parallels since I was a kid, this old dog learned a new trick. Thanks :)

[@olgabauerova3303]

Thank you for a simple explanation of a plottimg!!!👍🏻

[@chrisgraham887]

Excellent instruction as always!! Best on the net!!

[@georgedavis2725]

Great Video. It's obvious that you know what you are talking about. I would love to see you give more instructional videos. Thanks

[@lovro1423]

You are the best! Thank you!

[@boncelbincel4783]

Thank you Capt for the lesson

[@nickpalfrey2804]

Capt Jeff - you have just saved my bacon on a Yachtmaster Course! Thanks a bunch!!!

[@johnschofield2818]

Hey Cap. Your roll bar has it's own protractor! ;-)

[@henriklarsen2276]

Nice an clear. Thanx Capt. 👍 U learned me to use triangels 👏🙂👍

[@marceld6061]

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.

[@DamyEmo30]

Nice video.. I am triangle user, It is the best way to plotting :D

[@jeremy9876543]

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.

[@giantbillar6434]

Nice Capt ... its very usefull ... thank you

[@causewaykayak]

Yes. Neatly done. I'm sold that.

Lots of thanks for your clear explanation!

[@skipperry63]

Thank you for sharing this video sir! You explained these techniques very well!

[@causewaykayak]

Very helpful and clearly explained.

[@tronalpha9137]

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.

[@nateashinhurst3325]

Great video! This will be extremely helpful in comparing the 3 tools to my Midshipmen.

[@captainmike808]

Excellent presentation, I struggle with the slide rules so hopefully this will help, especially rolling around at sea.

[@markE946]

A very informative video

[@julianpearson7898]

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.

[@capt.govindrana3977]

super n simple tutorial by capt. jeff , thanks !

[@TheKiriru]

You are awesome, Sir!

[@hygeia2536]

Very informative and clear!

[@JudgeDredd0099]

Thank you, Captain

[@Blueberry0736]

Thank you very much ❤

[@churchofphiladelphia6930]

First video and subscribe right away. Your a 💎 very informative.

[@GobezaiK]

Very useful. Thanks Captain.

[@peakbagger7682]

Thank you. This was a big help. I had wondered if there was something better than parallel rules.

[@dallastek35]

WWow loved the insturction!!1

[@donswords6671]

Swapping my parallels for another triangle stat!! Thank you! (Does the mermaid have a name? I jealous!"

[@abubakarrkamara8171]

Very clear and concise

[@SeeWoelfin]

Very clear explanation. :) Thank-you.

[@abdulkkhan5095]

Great Instructor.

[@christopherratcliffe4405]

I always like to use triangle ruler 😀

[@wesleybuff2536]

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.

[@michella1913]

Thanks, Captain!

[@danielrodriguezperez8655]

Very well explanation

[@jethgoboy9927]

thank you capt more power!

[@CEOofSleep]

Nakasampa ka na barko

[@jonathanfriedman8343]

Terrific! Thanks!

[@PeaceQ8]

Interesting .. i want to learn this

[@nmi-edu]

We invite you to check on our website for more information : nmi.edu/

[@seals234]

awesome, helped me to recalled how to use it again. thks

[@dougfitch3649]

Thanks! Im a new convert

[@johnnybee1776]

Well done.

[@collincourtois8587]

I believe a "combination" of all these tools would be the Power and Sail Squadron ruler... Easy cheap and precise.... Just my 2 cents :-)

[@rachelmorneau1235]

Great advice!

[@IbrahimAbdelHakim]

American penis

[@IbrahimAbdelHakim]

Hark

[@benbrinker2722]

Any chance you have a video that describes how to predict the bearing and range of a light when abeam to starboard?

[@bhaskara2452]

Nice explanations

[@jaberjaber4229]

Good job

[@hunterterrell9930]

where can I aquire all these peices of equipment?

[@KeithSchulner]

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.

[@nmi-edu]

we invite you to check on our website for more information : nmi.edu/

[@babavaga]

bingo! Now i know it and can use for only ten minutes of watching

[@calkesti]

The hell? That is so awesome!

[@doggbyttt9465]

Those tech. ❤️

[@farqfarq2225]

Have you heard of the Breton plotter ?

[@robertstancer4469]

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?

[@obiwanfisher537]

Its kind of necessary. Also a pipe.

[@goadventuresail8879]

Check out the Portland plotter....

[@freditzkowitz4159]

The triangles give the course True, what if the question asks for magnetic course? Do you have you use the Compass Ross for that?

[@chrisbaum5725]

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.

[@gerardtaylor5004]

thanks for that, video

[@nurlatifahmohdnor8939]

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

[@morganmorales9474]

Whats the scale of that chart youve used sir?

[@terryhagan7694]

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

[@joshualeong7894]

4:25 How to use the triangles.

[@TheUSSHouston]

People that smack while they talk gets on my nerves. But a good instructive video.

[@obiwanfisher537]

Capt. Sylvia just wants to sell triangles haha

[@cotedazure]

Does anyone abroad use the Japanese Inoue-type triangles by any chance?

[@rabukan5842]

Badabing Badaboom!

[@MonaSykes]

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...

[@richhamel6810]

www.weems-plath.com/Products/Navigation-Tools-1/Protractor-Triangle-with-Handle.html

[@davidmedeiros483]

Weems and Plath make good ones

[@nadlol9555]

Lmaooo i scrolled through my liked videos and this is my first liked video O,O

[@bluespray9934]

Very convincing -- and nice tatts!

[@SOLDOZER]

Rulers are way less confusing.

[@denelson83]

This guy's pretty funny.

[@nmi-edu]

... and informative, we hope ...

[@gordonbrown2836]

Looks like you only need one triangle for everything you just did.

[@grupa2119]

So, the point is, that triangles are superior and everything else sucks

[@giordanclaridad9938]

OH NO IT DOESN'T REEAACCHHHH.

[@vitaliyradetskiy3336]

"bada bing bada boom"

[@mikaelnordnes3543]

badabing

[@user-xq7wv2lk7o]

Badaboom

[@tiberiu_nicolae]

smack smack smack smack... good info though

[@Braapstar219]

Barabing baraboom.