Bryan, I watched this navigation series a few days before my certification/checkout dives for Open Water. This past weekend during the certification dive the instructor wanted us to do an underwater swim using the compass, and asked who would lead the dive. I volunteered. He gave me the heading on the surface, I set the compass, we went down to about 30' and then I followed my heading and led the group directly to the designated spot. I received a fist bump from the instructor. Granted there were no obstacles to navigate around, just a straight line swim but I would have been less confident had I not watched your videos. I always learn something from them, and they are going to practical use so thank you!
one thing I learned in the military with land nav, before I joined the fire service was exactly what you said about "markers", we called those rally points, from there, you use the degrees and head to the next rally point for "X" amount of minutes. so, lets say..... you're in the water, you want to pinpoint where the boat is, you turn to the boat, note the degree heading( land nav would be writing it down on a piece of paper, or if you can remember it, great. i would assume under water, divers carry a slate, I have one and it was the best investment I ever made) then on your watch, note the time( even set a timer ) so if let's say you're swimming towards a wreck in the opposite direction or where ever..... you know the boat is at, lets say heading 285 degrees for 32 minutes. that's what shooting the azimuth is. :)
Its Always nice with these kind of videos even for more experienced divers, we forget stuff and sometimes can get hints on other ways of doing stuff. I love your videos and that they touch so many areas of the diving! Keep up the good work! Dan in Sweden =)
Hey Brian, I am not very mathmatical. I can do math, but certainly not very quickly. Is there a trick to calculating a reciprocal course (like a triangle ), without having to break out the calculator?
Hello Gee, yes and no. Depending on how well these series of videos do, we may make a 4th video showing you little tips an tricks on how you can utilize the rotating bezel instead of looking at the dial card. But for now you can do this trick. Make sure you plan your dives thoroughly in the beginning, even if you have to break out a calculator on land.
The sum of internal angles of a triangle is always 180° The sum of internal angles of a square is always 360° ... 540° for a pentagon .... 720° for an hexagon ... and so on... but.... If there are too many angles, please keep in mind that use the external angles instead of the internal ones quickly become easier because the sum of EXTERNAL angles of any polygon is always 360°
Bryan, I watched this navigation series a few days before my certification/checkout dives for Open Water. This past weekend during the certification dive the instructor wanted us to do an underwater swim using the compass, and asked who would lead the dive. I volunteered. He gave me the heading on the surface, I set the compass, we went down to about 30' and then I followed my heading and led the group directly to the designated spot. I received a fist bump from the instructor. Granted there were no obstacles to navigate around, just a straight line swim but I would have been less confident had I not watched your videos. I always learn something from them, and they are going to practical use so thank you!
That is so awesome to hear classicjag76. A most well deserved fist bump. I am happy to hear that our videos helped you out.
one thing I learned in the military with land nav, before I joined the fire service was exactly what you said about "markers", we called those rally points, from there, you use the degrees and head to the next rally point for "X" amount of minutes. so, lets say..... you're in the water, you want to pinpoint where the boat is, you turn to the boat, note the degree heading( land nav would be writing it down on a piece of paper, or if you can remember it, great. i would assume under water, divers carry a slate, I have one and it was the best investment I ever made) then on your watch, note the time( even set a timer ) so if let's say you're swimming towards a wreck in the opposite direction or where ever..... you know the boat is at, lets say heading 285 degrees for 32 minutes. that's what shooting the azimuth is. :)
Hello Jack Grant, aside from terminology, using a compass on land and underwater is the same. And you are correct, it is called shooting an azimuth.
Thank you for the part 2, reinforces in us all an essential skill ...
You're welcome David Taylor
Part 2 of great instruction - as always. I just want to come to spend a week taking classes with you. ;-)
Come on down and visit us Avery Einhorn.
Its Always nice with these kind of videos even for more experienced divers, we forget stuff and sometimes can get hints on other ways of doing stuff. I love your videos and that they touch so many areas of the diving! Keep up the good work!
Dan in Sweden =)
Thank you Dannydiver78, glad to know that you like our videos and find them helpful.
Great info looking forward to part 3
Thanks RICK CHAPMAN. Part 3 is now published.
Love the new intro
Thanks rick flippin
Bryan, what you're talking about is called "shooting the azimuth"
You're correct Jack Grant, its called shooting the azimuth.
Good series, informative
Thank you ksm8119, glad you liked it.
What song is that playing in the intro...pretty bad ass
Hello @patraesly8871. Not sure to be honest with you. It came from the UA-cam studios app.
Thanks for the interesting video! By the way, what is the theme music. I love it ✌️🎸
Hello D Guitar, glad you liked the video. The theme music is from the UA-cam music library.
@@LakeHickoryScuba Just found your reply, thank you.
Apparently it’s Darkness Rises by Daniel Robinson.
Hey Brian, I am not very mathmatical. I can do math, but certainly not very quickly. Is there a trick to calculating a reciprocal course (like a triangle ), without having to break out the calculator?
Hello Gee, yes and no. Depending on how well these series of videos do, we may make a 4th video showing you little tips an tricks on how you can utilize the rotating bezel instead of looking at the dial card. But for now you can do this trick. Make sure you plan your dives thoroughly in the beginning, even if you have to break out a calculator on land.
The sum of internal angles of a triangle is always 180°
The sum of internal angles of a square is always 360°
... 540° for a pentagon .... 720° for an hexagon ... and so on... but....
If there are too many angles, please keep in mind that use the external angles instead of the internal ones quickly become easier because the sum of EXTERNAL angles of any polygon is always 360°
I appreciate the artwork I think he's missing a tank though
You know I love Sidemount Diving, but this little 53 cf cylinder is one of my favorites for pool work.