| Re: The ancient art of landfinding in the Pacific
[Re: fin.]
#96493 01/18/07 08:10 AM 01/18/07 08:10 AM |
Joined: Jul 2004 Posts: 2,718 St Petersburg FL Robi
Carpal Tunnel
|
Carpal Tunnel
Joined: Jul 2004
Posts: 2,718 St Petersburg FL | Check with your local library! It's in the non-fiction section! <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" /> Sorry but that does not answer my question. What is this comming from? What is the source? | | | Re: The ancient art of landfinding in the Pacific
[Re: Robi]
#96494 01/18/07 08:24 AM 01/18/07 08:24 AM |
Joined: Nov 2006 Posts: 116 41.32 N, 81.35 W Stuart_Douglas
member
|
member
Joined: Nov 2006
Posts: 116 41.32 N, 81.35 W | Sorry but that does not answer my question. What is this comming from? What is the source? Pete listed the literary reference at the end of the quote he posted. It's from We, the navigators , and sounds like a very interesting read. | | | Re: The ancient art of landfinding in the Pacific
[Re: fin.]
#96496 01/18/07 09:52 AM 01/18/07 09:52 AM |
Joined: Jul 2004 Posts: 2,718 St Petersburg FL Robi
Carpal Tunnel
|
Carpal Tunnel
Joined: Jul 2004
Posts: 2,718 St Petersburg FL | We, the Navigators is a book written by David Lewis, published in 1972. He draws his information from the written record of the first European explorers to visit the Pacific and from conversations with the last of the Pacific navigators still living in modern times. Is that when they thought the world was flat? <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> | | | Re: The ancient art of landfinding in the Pacific
[Re: Robi]
#96497 01/18/07 10:28 AM 01/18/07 10:28 AM |
Joined: May 2002 Posts: 3,114 BANNED MauganN20
Carpal Tunnel
|
Carpal Tunnel
Joined: May 2002
Posts: 3,114 BANNED | We, the Navigators is a book written by David Lewis, published in 1972. He draws his information from the written record of the first European explorers to visit the Pacific and from conversations with the last of the Pacific navigators still living in modern times. Is that when they thought the world was flat? <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> No its when they were eating each other. | | | Re: The ancient art of landfinding in the Pacific
[Re: fin.]
#96498 01/18/07 11:39 AM 01/18/07 11:39 AM | Anonymous
Unregistered
| Anonymous
Unregistered | I read We the Navigators when prepping for my first trans-Atlantic. It was a pleasure to study and provided techniques that actually worked in the field.
"Expanded landfall" comes in handy spotting particular clouds over islands at vast distances.
"Star course" is a terrific technique of learning the sequence of stars that rise or set on a particular heading. Steering by the stars is considerably easier and more accurate than steering by copass.
Reflected waves didn't work for me, but wave profiles for various current vs. wind conditions is valid.
Regards Chet | | | Re: The ancient art of landfinding in the Pacific
[Re: ]
#96499 01/18/07 12:09 PM 01/18/07 12:09 PM |
Joined: May 2002 Posts: 1,037 Central California ejpoulsen
old hand
|
old hand
Joined: May 2002
Posts: 1,037 Central California | If you guys are interested in navigation, I read quite an interesting book a few years ago that I would highly recommend:
Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time
by Dava Sobel
Eric Poulsen A-class USA 203 Ultimate 20 Central California
| | | Re: The ancient art of landfinding in the Pacific
[Re: ejpoulsen]
#96500 01/18/07 04:19 PM 01/18/07 04:19 PM |
Joined: Mar 2003 Posts: 131 Scotland George_Malloch
member
|
member
Joined: Mar 2003
Posts: 131 Scotland | If you guys are interested in navigation, I read quite an interesting book a few years ago that I would highly recommend:
Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time
by Dava Sobel And if you ever get to London, John Harrison's clocks are in the National Maritime Museum in Greenwich. Amazing machines! Oops! Edited to say that they're actually in Greenwich Royal Observatory and not in the NMM - but you HAVE to go to both so it doesn't really matter!
Last edited by George_Malloch; 01/18/07 07:01 PM.
| | | Re: The ancient art of landfinding in the Pacific
[Re: George_Malloch]
#96501 01/18/07 05:14 PM 01/18/07 05:14 PM |
Joined: May 2002 Posts: 1,037 Central California ejpoulsen
old hand
|
old hand
Joined: May 2002
Posts: 1,037 Central California | I was just in London but didn't have time to see famous machines--I'll catch it next time.
Eric Poulsen A-class USA 203 Ultimate 20 Central California
| | | Re: The ancient art of landfinding in the Pacific
[Re: Robi]
#96502 01/18/07 05:36 PM 01/18/07 05:36 PM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
|
Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe | Actually that would be :
That is time when in a show of power the Church tried to make everyone believe the worlds was flat. In maritime circles however the knowledge that the world was a sphere was retained as accurate ever since its discovery. How do we know that now ?
Because of what use are latitude lines and sextants if the world was actually flat ?
Lets see if anybody knows the answer to this question.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: The ancient art of landfinding in the Pacific
[Re: Robi]
#96503 01/18/07 06:15 PM 01/18/07 06:15 PM |
Joined: Feb 2006 Posts: 3,348 fin. OP
Carpal Tunnel
|
OP
Carpal Tunnel
Joined: Feb 2006
Posts: 3,348 | We, the Navigators is a book written by David Lewis, published in 1972. He draws his information from the written record of the first European explorers to visit the Pacific and from conversations with the last of the Pacific navigators still living in modern times. Is that when they thought the world was flat? <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> WAS flat <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" />!? You got me Wout, I do not know. <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />
Last edited by Tikipete; 01/18/07 06:16 PM.
| | | Re: The ancient art of landfinding in the Pacific
[Re: BLS]
#96505 07/07/07 03:06 PM 07/07/07 03:06 PM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
|
Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe |
Exactly !
Because Mariners stuck to latitude lines and measurement devices like the sextant we know that part of European society retained the conviction that the world was round ever since that fact was discovered by the ancient greeks. In midevil times this was a tightly kept "trade" secret as you would be beheaded by the church it you ever decided to share this knowlegde with the world.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: The ancient art of landfinding in the Pacific
[Re: BLS]
#96506 07/08/07 09:33 AM 07/08/07 09:33 AM |
Joined: Nov 2002 Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... Mary
Carpal Tunnel
|
Carpal Tunnel
Joined: Nov 2002
Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... | If the world was indeed flat the measured angle to any star would remain the same no matter where you were on the flat world. Because the globe is actually round the measured angle to any star changes as you move towards or away from it. For example the angle to the north star gets smaller (in relation to Horizontal) as you go further south. This would not happen on a flat world. This is just basic geometry stuff.
BLS I don't understand that. If the world were a pancake but were still circling the sun and rotating on an axis and oscillating on that axis, wouldn't you still get different angles to the stars? Also, if the Earth were a pancake, would places like Australia and China actually be places we could get to with a really good posthole digger? <img src="http://www.catsailor.com/forums/images/graemlins/smirk.gif" alt="" /> | | | Re: The ancient art of landfinding in the Pacific
[Re: BLS]
#96508 07/08/07 02:52 PM 07/08/07 02:52 PM |
Joined: Nov 2002 Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... Mary
Carpal Tunnel
|
Carpal Tunnel
Joined: Nov 2002
Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... | The answer to your second question is probably no. I have never seen anybody small enough to fit down a hole the diameter that a pole digger would make. All I know is that I was told from early childhood that if I started digging a hole in my yard in Ohio and dug it deep enough, I would end up in China. I'm surprised nobody has yet dug a tunnel to smuggle in goods from China and bypass customs and import duty. Why should we go around the outside of the globe, when we can take a shortcut through the middle? Maybe we could set up vacuum tubes to suck products back and forth from one side of the world to the other. Maybe people, too. <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" /> | | | Re: The ancient art of landfinding in the Pacific
[Re: Mary]
#96509 07/08/07 03:16 PM 07/08/07 03:16 PM |
Joined: Feb 2006 Posts: 3,348 fin. OP
Carpal Tunnel
|
OP
Carpal Tunnel
Joined: Feb 2006
Posts: 3,348 | Why should we go around the outside of the globe, when we can take a shortcut through the middle?
Last time I heard, scientific thought was that the center of the Earth is a glob of molten iron a few thousand miles in diameter. | | |
|
0 registered members (),
666
guests, and 150
spiders. | Key: Admin,
Global Mod,
Mod | | Forums26 Topics22,405 Posts267,056 Members8,150 | Most Online2,167 Dec 19th, 2022 | | |