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?
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?
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.
The best video on the subject! Merci!
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?
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!!
I rember reading somewhere, they use to build metal ships bow north, less deflection on a compass
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.
First, kadoooshhh!!!!