Knowing the military they will have you watch it all in one sitting with only a few breaks and expect you to know it. Our method in the Marines was throw guys into a place with briar patches and cliffs at night time and give them a time limit to find boxes with numbers on them. If it dont make em good at navigation it will sure make em mean.
Part One: Equatorial/Celestial System 00:00 Part Two: Horizon System 11:39 Part Three: The Intercept Method 18:43 Part Four: Solution and Practical Application 29:36
Finally, a Celestial Navigation video that coincides with the H.O. No. 9 American Practical Navigator publication and is clear and concise. Thanks for posting this great film from WWII.
I was a USAF Navigator in the early 80s. I remember watching this on 16mm film. Everyone laughed at HoMoTo! This is the best video I have seen. I’m now learning to use a marine sextant. Concepts are the same but use the real horizon rather than a bubble.
Thank you for posting this very illustrative old instructional video. Where did this video come from? Can you credit the source in the video description? I hope more old instructional videos like this are digitized.
I did the math for getting a position from 3 observations alone. At first I tried just finding the intersection of the planes that the circles of equal altitude live in, but that can give your position with an error of a whole degree across earth's surface or more (60nmi). To get accuracy, you can find where the circles of equal altitude all nearly intersect. My result involves too much computation to do without a computer program or spreadsheet though, and I wouldn't want to have to do it by hand even with the aid of a calculator.
By far and away the clearest explanation of celestial nav I’ve had since I was at nautical college ,especially as it must be 50 odd years old Excellent
Polaris isnt exactly above the top of our planet and its movement is measured year by year. Every night it circles the north celestial pole like every other star in the northern hemisphere. there is even closer stars to the pole than Polaris just not as bright.
¿Any idea how to locate the first aries point from any place you are on earth? Is for the purpose of practicing. Maybe some DIY clinometer gadget, that help me to locate where is the vernal point, and after that, finding a star by it´s declination and AR? Or maybe a simpler method? By the way, i like your tutorials, they are very good!
Yes, same principle but different mathematics. With the use of a sextant, you are measuring the angle to calculate the distance you are from the GP of the heavenly body. GPS works on a signal sent from the satellite and your GPS is actually a receiver. Your GPS will receive the signal and decode it, and it works on the principle of the speed / distance / time equation. Your GPS knows the location of the satellite, the speed of the signal and the time in which it takes to get from the satellite to your GPS recieved. (there are some errors in which your GPS will apply (clock error, drift error) The GPS now now knows the exact distance you are from the satellite, and just like a single observation with a sextant - with one satellite you will have a circle on the earth. 3 satellites are required to give you a position fix. (however GPS uses 4 (see pseudo range)
@@marsa7600 No satellite Antennas exist not floating space satellites. Satellite antennas send and receive radio signals that is how gps and other things work out at sea.
23:29 when they show a triangle on the curved surface. How can you find the angle of the other sides when the angle will be different all the way between the three points?
Don’t bother answering this numpty. I knew I’d find one here. He’s either a lying grifter flat earth numpty, or he’s lazy and regurgitating some nonsense from one of his idiot hero’s videos, or he’s truly stupid and cannot conceive of 3D space, thinking that the lines are CURVING toward each other because they look like that on the two dimensional video screen. The fact that they are STRAIGHT LINES, traveling over a CURVED SURFACE is far, far beyond him. Just ignore the idiots.
Great elementary introduction to celestial navigation. I have to admit that I am affected by Dyscalculia. Numbers seem to come and gone like grains of cool-aid powder. At 62 I have read many books on how to Celest nav and of late watched several you-tube vids for the last ten years and it is still like looking at a muddy lake and trying to pick out a single silt particle to me. I am fascinated by Celestial Navigation but its so far beyond me. I have developed other super powers, but number evade me. Jim Rodgers
Thank you! By any chance could you steer me towards the source information for this video? I'm writing an essay and would like as accurate source info as possible.
It's most likely either a WW2 "USN" or "USAAF training film" like this: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gAqwEpPP0do.html Or you could try the National Archives: www.archives.gov/education/history-day/video.html
@@DoctorShocktor doctor, be careful what u said. I am sailor so i need this actually. But i said like this because really i can't understand. Yeah, this was using then but year is 2024.
Nobody needs this. We have google maps and Smartphones. Why would I bother actually learning about my place in the universe when all I need to know is how to get to work, Wal Mart, and home!
Nobody needs this. We have google maps and Smartphones. Why would I bother actually learning about my place in the universe when all I need to know is how to get to work, Wal Mart, and home!
This is ancient stuff. I have a GPS in my smartphone that pinpoints my location with greater precision and accuracy. Why go back to the stone ages, people? Hold on, my smartphone is on low battery so I need to find my charger cable.
The US and other Navy's would disagree, as in wartime GPS systems can be jammed, spoofed or put out of action entirely. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9IIMrk0QrIY.html
