Жыл бұрын
2 жыл бұрын
2 жыл бұрын
3 жыл бұрын
4 жыл бұрын
4 жыл бұрын
4 жыл бұрын
Пікірлер
@LucasErickson216 10 күн бұрын
I love you man, this is amazing teaching
@daath5114 10 күн бұрын
Good thing the Earth is Flat otherwise lighthouses wouldn't work!
@camwhitman5425 19 күн бұрын
But the Earth is flat. What part of a flat horizon do you not understand? Even a basketball is rounded in 360 degrees, no matter where you were on the basketball.
@robertlafleur5179 8 күн бұрын
Earth is flat? Really? Why is it then that none of the flat earthers I gave a Celestial Navigation problem were able to solve it using flat earth geometry? I only get excuses, insults or they run away.
@chrisconkright9259 24 күн бұрын
Former OS here. Brings back memories. Thank you. 🇺🇲
@Robb-jf7vg Ай бұрын
My Davis "plastic" Sextant was out performed by a HOME MADE Sextant put to gather from bits and pieces left in the junk box at the engineer department at school. Was highly accurate, even when tested at sea on a 48 foot sailboat traveling from San Diego to Hawaii ! So, no. I'm not going to spend any more cash on these plastic toys. Give me metal every time.
@andersonazevedo7833 Ай бұрын
I’ve got your teaching material and it’s awesome.
@dougfitch3649 Ай бұрын
You are the best teacher I've encountered for this!
@sergiokhrystyuk2441 Ай бұрын
It's one of the best tutorials on astronavigation I have ever seen. Many thanks for your efforts.
@JohnDoe-kc8si Ай бұрын
You wrote on the book! I felt every milliseconds of it
@wes326 Ай бұрын
I was a USAF RC-135 navigator back in the 80-90s. We used to shoot cell every 20 mintes for up to 12 hours on a flight going 450 kts. Works pretty well in a stable platform if you do your calculations and plotting correctly. Thanks for sharing.
@nathanielbyrne1132 Ай бұрын
What's the name of the song from 6:52?
@nathanielbyrne1132 Ай бұрын
Nice video, learnt a lot, I feel like these were simpler times, 2013.
@zaaribishaq4847 Ай бұрын
Metal 🔧🪛⛏️🧲🪚⚙️
@doglao1236 Ай бұрын
Nice learning with you, I have one and studying trigonometria
@arniewillis3050 2 ай бұрын
Can you calculate the assmiths of sunrise and sunsets through the years.
@bl7355 2 ай бұрын
I wish I had known this years ago 🙀
@Pablo-ob7hm 2 ай бұрын
Simply the Best !... a Guru in this subject and a master in its delivery.... thank you !
@Worldofchavo 2 ай бұрын
Fantastic easy explanation
@babotond 2 ай бұрын
"..if you believe in that sort of thing..." 😂😂
@vernturi3198 2 ай бұрын
the graphics, explanations, and definitions are very well articulated. Thanks!
@robieprice4685 3 ай бұрын
thanks, brushing up on old skills. Lahaina noon is tomorrow here on Maui. I'm going out at noon and using my flagpole to find my latitude here in Haiku. thanks,
@nah200 3 ай бұрын
What a relief , the confusion and doubt I had have finally been resolved. Thanks for your absolutely amazing explanation. Cheers🫡
@jereminehurst7598 3 ай бұрын
Absolutely brilliant presentation, a real ‘Ahaaaaaa I get it now’ moment for me! Apart from the 90deg to 89deg60 trick.🤷♀️
@penhdog2207 3 ай бұрын
Third video I've watched on the sextant so far and the best. I like how it gets to the basic idea of what you do and what you see etc. I knew nothing about it 10 minutes ago now I got a rough idea. I wanted to research after seeing Robert Redford use one in All is Lost. Next thing I wanna look up is, how do you take those measurements and apply them to a map? I guess there is a video on that also. I will look.
@marcg1686 3 ай бұрын
Chris has a video where he demonstrates the process of converting an observed altitude into an intercept.
@Pablo-ob7hm 3 ай бұрын
You are simply the best tutor in this field...absolute GURU.... thank you for your brilliant work !
@rayhsetwo8594 3 ай бұрын
That was without doubt the best explanation I've seen so far and the order of flow very well presented.
@markdevine7934 3 ай бұрын
Excellent teacher!
@dougfitch3649 3 ай бұрын
EXCELLENT instruction Chris. I have a lot of difficulty going from printed material only to comprehension. This just clarified a lot and I will save this vid for ongoing reference. I'm hoping to be a student of yours at some point in the near future. Mahalo!
@bodvarthorsteinsson5627 3 ай бұрын
Good except the music
@simonharby5537 4 ай бұрын
really excellent thank you
@saumytiwari7 4 ай бұрын
Google's Gemini A.I. recommended me this video, As i am talking about universe and solar system
@SearchIndex 4 ай бұрын
Use sharp skinny lead and spin your pencil and draw lightly and erase nicely …a clean plot is a happy plot 😂…and know your ‘station peculiarities’
@joeltatham5673 4 ай бұрын
Phenomenal video. The best celestial video I’ve ever seen.
@caleblilacurran6370 4 ай бұрын
Awesome instructions sir
@scisci1 4 ай бұрын
Great video, I really enjoyed it. Oddly satisfying to watch you work through each problem. Not gonna lie, looks crazy difficult
@stevenm6592 4 ай бұрын
Some really smart people figured this out. Especially those in olden days. It blew my mind just watching this. Great job explaining but WOW.
@Technoviking-wc7ks 4 ай бұрын
excellent usage of the dual markers stacked in a composite unit used for pointing! +1 sir
@robnee3313 4 ай бұрын
Nicely done. Thanks
@causewaykayak 5 ай бұрын
A simple question, Do you need to factor in Equation of Time to figure things like Time of Phenomenon - sunset and so forth ? OR are the daily page times already adjusted for us ? Thanks in advance for advice on this.
@marcg1686 4 ай бұрын
Chris has three videos dealing with basic, intermediate and advanced concepts of time. Very informative.
@causewaykayak 4 ай бұрын
@@marcg1686 Thanks. I've been over these a few times but Equation of Time doesn't get a mention except to say it is included in the Daily pages box, page bottom alongside Sun and Moon transit times. What I have "worked out" for myself is this: taking an example from today's entry - Meridian Passage given as 1205 UT and EoT for Noon as negative 04':54". It seems plain that 6 seconds have been rounded off. For tomorrow (March 29th. 2024) the rounding is 24". This practice is evident in the Nautical Almanac for all recent years. I was a bit thrown when there is otherwise insistence on time keeping precise to the second. In the NA Auxiliary & Planning Data para.18 (page 260 in UKHO volume for '24) advice is given to adjust mean time by applying EoT. No mention that the time of Meridian Passage is perhaps already adjusted. It is I think a Grey area. I make solar compasses of the Bagnold type and prepare setting tables for these. It's a historic feature of these that individual operators make their own adjustment calculations for LAN at their DR position. The values for this (EoT) are taken from the Analemma. PS Are you The Captain Marc attending the past Sailings online classes ? If so Greetings. Many Thanks for the input 👍🏼
@Moloch6666 5 ай бұрын
How does the second matter when it takes several seconds from when you are done with the reading and have written it down after looking at your watch?
@karhukivi 3 ай бұрын
You look at your watch first. The reading stays on the sextant if you don't move the arm.
@hootis8 5 ай бұрын
Thanks, great video
@michaeldonovan7522 5 ай бұрын
Just passed the dreaded chart plot using this guys videos on his website. Best videos for this topic hands down.
@captainJHS 5 ай бұрын
Awesome job. Thank you
@therocinante3443 6 ай бұрын
I searched how the stat tracker on the SR-71 worked... It's been quite the rabbit hole and now here I am!
@user-eq3dv6li6y 6 ай бұрын
I would like to thank you for the videos...I am sitting for Exams and I found them very helpful. All the best to you. Thank you again
@sanjeevverma6348 6 ай бұрын
Nice video, I'm retired from merchant marine, but teach ratings the basics of navigation
@rentacowisgoogle 6 ай бұрын
LHA is important when you're trying to fit all of the tables required to do this into a single book.
@marcg1686 6 ай бұрын
No offence, but I don't understand the point you're trying to make. If you use HO229 or HO249 Volume 2 and 3, the entry arguments are Lat, Dec and LHA. If you use HO249 Volume 1 the entry arguments are Lat and the LHA of Aries. The LHA is a prerequisite.
@rentacowisgoogle 6 ай бұрын
@@marcg1686 That is my point. With LHA you can constrain the number of possible triangles that need to be pre-computed down to something manageable. Very clever.
@user-mr2nx3nf8f 6 ай бұрын
Nice video. I am going to to learn this. It got me thinking how the sentiment these days is that we've left the entire past in the dust with the computer age. I can rarely get someone under 35 or so to be interested in anything not "techy". But can you imagine the minds the developed a technology like this. If I understand correctly it is accurate to within 1nm. The first sextant dates to around 1759. what is that, 264 years? I find that just amazing. No batteries or connection required. A beautiful, to me, tool and a book. And a brain.
@carolsparks7070 6 ай бұрын
I was curious how this is done. This is the 3rd and easiest, although not easy, instruction I’ve watched. It is not clear to me after you take this measurement - how do you know where you are?