Celestial Navigation: Magnetic Declination
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- Опубліковано 12 вер 2024
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---------ABOUT THE VIDEO---------
This video was originally uploaded to our other channel, Casual Navigation.
We explain the difference between True North, Magnetic North and Compass North.
When navigating at sea, one of the fundamental skills is using the magnetic compass. To do so, you need to know how to work between true north, magnetic north and compass north. This video explains how you should do so, running first through the theory then taking you through some example questions.
We also show you how to read variation from a nautical chart and where to find your vessel's deviation.
---------DISCLAIMER---------
Although we take all reasonable care to ensure the accuracy and reliability of the information provided in the content on this channel, the content is provided “as is”. We do not make any warranties about the accuracy, content, completeness, legality or reliability of the information contained within this channel.
The information contained within our videos is not professional or legal advice and should not be considered as such. If you need professional or legal advice, you should consult a suitably qualified professional.
Any action you take as a result of watching this video is strictly at your own risk.
The best video on the subject! Merci!
Okay I'm so happy I found this channel, I'm going to be taking my Orals next year and this is going to help SO much. Would you have any content for Practical Navigation such as Polaris, Azimuth, Intercepts etc?
Me too..going to exams in near future..found this video really helpful!!
Because of the coming micronova, declination is moving much farther, and much faster and so declination information is likely incorrect My up-to-date declination is 30 degrees, 15 degrees off from the official declination for my area. but there is still a way to recalibrate magnetic declination using the shadow of sticks recording the path of the sun---rotation of the earth has not yet changed. First stick will show East. Mark it with a sharp stick pushed in. After a few minutes you can mark sun shadow travel where the shadow has moved - Push another stick in to mark West. Lay a straight stick from the E mark to the W mark. Geographic north or True North is 90 degrees from the E-W line. With your compass pointing toward True North, note how far off your compass is now. That is your true up-to-date declination. More on micronova in my 2nd book, Surviving the Micronova: This Train Is on the Tracks is available now.
Thanks for excellent explanation, i have one question, if we want to steer O9O degrees course, let say Var= 5 degrees East and Dev= 5 Degrees East, it means that Compass Course will be 080 degrees, and let assume Gyro compass isn't working, so helsmen must look on Magnetic compass and must steer 080 degrees but in reality vessel will reach 090 degrees yeas?
I rember reading somewhere, they use to build metal ships bow north, less deflection on a compass
First, kadoooshhh!!!!