Not sure why we still are teaching things like paper charts or course to steer when we have electronic devices on the boat, as well as tablets and smartphones that make following a heading and automatically correcting for wind and currents a breeze and back each other up! I don’t remember the last time I used a paper road map!
Great job! I'm a retired teacher who was assigned to CIC aboard a navy ship. Because I had high recruitment test scores, I was put in CIC but with no training. Since we immediately deployed to Viet Nam, there was no real time to train. I was really embarassed that I was not able to do plots when all my radar buddies were doing them effortlessly. I tried to derive the whole process algebraiclally with no success. A very kind junior officer took pity on me after observing me trying to derive the process with paper and pencil and requested I be sent to data processing school after which I did very well operating and programming computers. It's always been at the back of my mind to address the plot. Thank you for very clear introduction to this fundamental radar navigation task. It's indeed one of those terrific AHA! moments for me.
If a preferred channel is to port then you should go to the port channel but still staying on the starboard side of the port channel to main time good seamanship
And by the time you're done with that, your ship has traveled 17 knots away from your sighted position with the rudder 3 degrees to starboard so you're steaming a curved path...
Sailing student here! Forgive my question, but isn't tide the vertical movement of water and the current the horizontal one? If that is correct, why do we call the third vector "tidal" vector? Your videos are truly helpful anyway, very well explained and detailed!
I feel like this is overcomplicated. Just use True Virgins Make Dull Company add Whiskey minus Ethics. That's all I needed to remember this conversation
Wtf . Have you ever know about something called North Star how someone like Robert norman knew that 500 years ago and you are in 21 century thinking like this
*@**7:11* *This clown 🤡 debunked his own globe model!* 🤣🤣🤣 *He don't know basic geometry!* *If we measures any angles we must needs horizontal base line!* *@**7:37* *You dumb@ss clown* 🤡
Hi, just looking for some help, please. 7mins into this video it explains longitude of 073.561 divided by 15 degrees = 4.929. When I do this calculation I get 4.904. What am I doing wrong here, thank you
I'm sure that many of the very "Old" tables could be used without 🤔 copyright concerns. For example: H.O. 208 first appeared in 1928. H.O. 211 appeared in 1931. And the 9 Volume set of H.O. 214 wasn't fully complete untill sometime in the 1940's!!!! Plus; Mick Pepperday invites "Navigators" to freely copy his "Sight Reduction Forms" for "personal and Educational use". He has a muti-use form that I've used for decades. It is perfect to reduce a sight (with high accuracy!) via my Ti-30 calculator. Even the "Original" 1976 version of the Ti-30 can be used! (I'm a bit of a collector, and have several "Ancient" examples on hand of both early calculators and computers 🖥)
I finally understand now after taking a pen, paper, and ruler and mapping this out. So if I understand correctly, the first LOP gives you the set of all possible positions you could be at 2200 from the azimuth to the tower. Simple enough. Then, after 30 minutes, assuming your ground speed and course was correct, you know the new line of all possible positions you could be at 2230. (Take the first LOP and advance it using your course and speed). However, the other LOP you get from the azimuth to the tower at 2230 is ALSO a set of all possible positions you could be at (you HAVE to be somewhere on that line). By taking the intersection of those two lines, you can find your position both at 2230 and 2200 because you must be at a point on both lines. This is really cool geometry, I only wish I figured it out on my own! Oh well.
This was very clear and explanatory, but now what? What does it mean, that the red object was 12.whatever degrees from the horizon? Does this tell us what latitude we're on? Thanks.
I just have ome question. Do we need to know which reguon we re in before hand. Or is there a way we just know looking at the buoys which region we r in durimg teh day and night
It is best to identify in which region you are at to avoid any confusions.. otherwise during day time you may identify which region you are in by looking at the shape on top of the buoy and the color of it. Night time it is possible to identify it by looking at the shape of the retroreflector on it which is not visible from far
Finally a video with a nice diagram explaining the logic behind east/west magnetic declination calculation. Thank you VERY much! Such a simple concept but I had been getting really confused until I saw your video.
