Use Orienting Lines to Turn You Compass into a Protractor for Plotting Azimuths for Navigation
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- Опубліковано 5 чер 2024
- Use the Orienting Line on you compass to create a protractor for plottong Azimuths on a Map
Dave Canterbury shows simple Navigation Skills to ensure you never get lost
Map and Compass Use made easy by Dave Canterbury
My dad taught me this waaaay back in the Boy Scouts for our land navigation training.
He served in Vietnam, and his entire job was using maps to coordinate artillery fire. He taught me so much stuff, including navigating at sea. He's still around, 79-years-old, and when I told him I'd be driving from Tri Cities, WA to Nashville, TN for my move this year, he couldn't help want to assist in plotting my route, just like we used to do all those years ago on family road trips.
Navigation is such an useful skill, and my dad also tells me that's what a father is all about; being a lighthouse, a guide who won't tell you where to go, but rather help you know where not to go. We all have our own journey, and while our paths cross, a good person helps you avoid the pot holes.
Dave, thanks so very much for this. This technique is the exact way I was taught when I took the Map, Compass, and Survival Course put on by the MA Dept. of Wildlife back in around ‘86 or ‘87 when I was about 14. My dumb ass lost the hand outs and manual for the course so I could never remember how this was done. I aced this course at such a young age, because this is the easiest, by far, method of orienteering from known point, to known point there is, at least for me. Thanks again.
The Map Reading Company teaches this, also. Good presentation of the technique Mr. Canterbury.
I did a short three mile hike in Rock Creek Park (Washington DC) today using a compass and this clip breaking down the basics really helped me. Thanks Dave!
This is my favorite way of orienteering with a map. It is so simple, quick and easy, and combine it with catching features and handrails it is pretty much foolproof.
Short and sweet. Great video with important info. Thank you Dave.
This is similar to how a Breton plotter works. Excellent demo Dave.
We use this technique in mountain rescue teams
Love this series brother, thank you!
Dave is the King
This is so baddass! I'm gonna do this tomorrow and find something cool to explore in my area!
Killing it with these videos!
Thanks Dave
That's pretty slick! Great series, will definitely mark this for future review.
Thanks again for all the great content.
The Silva Method, which includes the Silva 123 technique of using the inner meridian lines, was developed in the 1950s by José Silva. So, it's been around for over half a century, evolving and adapting over time.
Using the magnetic needle to obtain a map azimuth must be a technique taught in boy scouts etc. This can be dangerous technique as magnetic interference can result in skewed azimuths. The map must be secure in order to obtain an accurate azmith. I believe the military uses a protractor for this reason as well as the Commenga has no inner meridian lines to align with the Eastings of the map. Note that the rotating bezel line on a Commenga military compass can be used similar to the Silva 123 method. The bezel line can be closely approximated to map North. You point the rotating bezel line N then rotate the compass until the magnetic needle is under the bezel line. Under the Index Line (black line of the compass) will be your grid azimuth. Declination must then be factored. This technique can be used "on the fly" and will be close to being accurate.
Perhaps Dave can show this technique outside of this series in case someone breaks or loses their protractor while using a military compass.
There is also a bezel click technique to adjust for declination. Left to adjust for Westerly declination and right for Easterly. Each click is three degrees so you may be out a degree using this technique.
Great tip!
What a great piece of new info. Thanks man.
Great information. thanks for sharing.
Love it
Your awesome brother👊🏼
Thanks!
priceless. ty
Nice.
They teavh this stuff in aviation school.
Why did it look like your compass was pointing your direction to the West when you housed the needle when your destination was to the East
I would say you misinterpreted something the map is grid north but laying on the table facing south, which makes no difference in this exercise azimuth was east and needle orientation was correct