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Old 15-01-2019, 14:49   #31
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Re: Magnetic Pole Shift causing Armageddon!

So if the magnetic pole will shift so that north is now south, doesn't that mean Trump should be planning ahead and build a wall on our Canadian border and make Mexico pay for it. We don't want a southern border that just anyone can cross. Or am I really confused.

Sun rises in the west and sets in the east.

The caribbean would include the East Indies.

Tahiti would be in the North Pacific?

Birds in the USA fly north for the winter.

Southerners sound like northerners. Y'all gotta be jokin.
Northerners would drink sweetened ice tea.

North Carolina would be South Carolina and vice a versa. Ditto for the Dakotas.

All too much to contemplate.
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Old 15-01-2019, 14:51   #32
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Re: Magnetic Pole Shift causing Armageddon!

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Originally Posted by boatman61 View Post
All one needs to do is keep up to date with published Variations and its no biggie.. not forgetting your own boats deviations.. been doing it for decades..
Nothing new for the old school..
You are being too serious. You need to let it all out.

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Originally Posted by Montanan View Post
So if the magnetic pole will shift so that north is now south, doesn't that mean Trump should be planning ahead and build a wall on our Canadian border and make Mexico pay for it. We don't want a southern border that just anyone can cross. Or am I really confused.

Sun rises in the west and sets in the east.

The caribbean would include the East Indies.

Tahiti would be in the North Pacific?

Birds in the USA fly north for the winter.

Southerners sound like northerners. Y'all gotta be jokin.
Northerners would drink sweetened ice tea.

North Carolina would be South Carolina and vice a versa. Ditto for the Dakotas.

All too much to contemplate.
I love it.
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Old 15-01-2019, 14:51   #33
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Re: Magnetic Pole Shift causing Armageddon!

This is why educated, skilled, mariners, for decades, have converted magnetic to true on their charts. If the position of an object was calculated by adjusting for the then magnetic variation when charting an object 100 years ago, its position today, in theory, is exactly the same when the magnetic variation of to day is adjusted to true.

Of course there are other chart anomalies and errors which can result in an inaccurate position for any object.
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Old 15-01-2019, 15:01   #34
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Re: Magnetic Pole Shift causing Armageddon!

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Of course there are other chart anomalies and errors which can result in an inaccurate position for any object.
Not only that, but in volcanic areas, the rocky bits can and do move around. Too much trouble right now to get it out, but there's actually a note on one of our old paper charts for Raoul Is. which states that the depths may vary as much as 20 ft. I don't think I'd like to have that bubble under my keel!

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Old 15-01-2019, 15:01   #35
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Re: Magnetic Pole Shift causing Armageddon!

We use , know and understand Coastal Piloting, and Navigation.

We still use paper charts, ships compass, knot meter, a time piece, hand bearing compass, parallel rules, and dividers, and know and use DR'S, EP'S, and Fixes. and running fixes. We feel it is important to know and be able to use Coastal Piloting and Navigation.....

We also can navigate using depth sounder, and fathom lines.

And Eyeball Navigation .

Add in our personal hand held GPS to back up our own Nav, or vice versa.

And, also the GPS that is installed on board.

We have been sailing world wide for 35 years, and do just fine.

Hand bearing compass. When I get on board , I use my hand bearing compass to check the ships mag compass. That includes checking the auto pilot heading. Have had all of those off by many, many degrees, up to 45 plus.


Others are totally dependent on electronic wonders, and that includes everything on board, I pads, smart phones, AIS, GPS, moving maps, auto pilots, etc,, etc.

A good plan is be able to use ALL aspects of navigation, and not just one method.

I find that the all of the electronics that people rely on, can get them into deep , or shallow problems or worse. Plus, not maintaining a watch, no one at the helm, knocking down the booze, and visually have no clue as to situational awareness .

And these a the ones that tell me they do not need Coastal Navigation or stand watch, and even look for traffic, jettys, reefs, shoals, navaids, etc.

We would add in, a good Crusing Guide, Sailing Directions, U.S.C.G. Light List,
and Notice to Mariners, CG 169 Col Regs, ( signal lights and day shapes ) etc.

Been sailing and skippering motor vessels for 36 years, professionally, world wide, and we practice what we preach and teach.

We will be overcoming Armageddon again in May, sailing the BVI . I am actually more concerned about indifferent, boozer, skippers, than Armageddon.
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Old 15-01-2019, 15:06   #36
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Re: Magnetic Pole Shift causing Armageddon!

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It's about time we returned to natural order with Australia on top.
Will Australia be refered to as the place Up Over?
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Old 15-01-2019, 15:40   #37
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pirate Re: Magnetic Pole Shift causing Armageddon!

[QUOTE=Montanan;2803391

North Carolina would be South Carolina and vice a versa. Ditto for the Dakotas.[/QUOTE]

Thats why theres two Beauforts.. saves getting confused.
Dem Carolinians saw it coming centuries ago.
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Old 15-01-2019, 16:49   #38
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Re: Magnetic Pole Shift causing Armageddon!

Oh great. Now I won't know whether to head north or south for the winter!
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Old 15-01-2019, 16:58   #39
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Re: Magnetic Pole Shift causing Armageddon!

Wait a minute...hasnt this movie already been made at least once? [emoji6]
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Old 15-01-2019, 17:02   #40
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Re: Magnetic Pole Shift causing Armageddon!

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Hahahahaha - Yes, this. But I think the current rate of change is the highlight here. Obviously, this is what Trump and Putin were discussing, and have supressed lest it cause widespread panic amongst the cruising community. So if you see a Russian submarine approaching your marina, do not assume imminent armageddon...prolly just be a bit off course
That or its just more fake news propogated by russian bots! [emoji6]
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Old 15-01-2019, 17:18   #41
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Re: Magnetic Pole Shift causing Armageddon!

😱🤯😩🤔😂
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Old 15-01-2019, 18:17   #42
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Re: Magnetic Pole Shift causing Armageddon!

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Originally Posted by CaptTom View Post
You can't prove it!
Observations don't require proof only theories postulated to explain them.


The simple way to check this for yourself is to measure the magnetic bearing of the sun at sunset and compare it to the almanac position which is based on celestial north (and is the same as true north). This gives a calculated variation for magnetic north at your location. You could then try comparing this to mag north as given by your GPS which is based on the magnetic model and will give an idea of the accuracy.


When does it matter? definitely of interest if you sail the pacific NW where variation is in double digits. Probably even more so in the sea of Japan where where the motion of the pole is at right angles. Don't know how this is affecting the southern hemisphere but could be worth a check on the S coast of Oz.


Why does it matter? If you plot the position of a ship using the hand bearing compass then transfer it to a chart the ship will be in the wrong position if you use the wrong magnetic variation. Not good for collision avoidance. If you plot a course on a chart then take that course as a compass reading for your magnetic compass you will be sailing the wrong course. Both of these errors don't go away if you use electronic charts. They only disappear if you use a gyro compass or autopilot (both work on true north).


The other place it matters is if, when you make landfall in a new area you check your GPS position against an observed position fix. This tells you the datum error (can be in miles!) but is usually consistent in a local area. If you use horizontal sextant angles it will be fine but if you use a compass you may have errors in plotting.


At present this is not a great worry, the only place that has seen shifts measured in degree rather than decimals or min's is Alaska, It is the uncertainty that is causing concern. Evidence from the geological record shows that when the field flips it does so very quickly. So if that is what is happening we could shortly see changes in degrees anywhere, possibly even 10's of degrees and you may get to see the Northern Lights while sailing in the trades which would be kind of cool!
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Old 15-01-2019, 18:33   #43
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Re: Magnetic Pole Shift causing Armageddon!

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Old 15-01-2019, 18:41   #44
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Re: Magnetic Pole Shift causing Armageddon!

'Poles' have always been an adventurous lot.
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Old 15-01-2019, 18:54   #45
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Re: Magnetic Pole Shift causing Armageddon!

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'Poles' have always been an adventurous lot.

Think you may be confusing Poland with Norway and Sweden where the vikings come from. Poland is east of Germany and only has one sea port
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