[Sherman Logan]

it has long been believed that Marco Polo navigated the Arctic from China over to Greenland in the 1200’s.

Believed by whom?

Marco traveled to China overland across the steppe, and returned to Europe via the southern sea route through Malaysia. I don't recall anything about long sea voyages while he was working for Kublai.

[joeystoy]

There is speculation that Marco Polo sailed the Arctic north of Siberia. His logs mentioned that his compass read a course pointing north while Polaris was at his back. This was due to magnetic variation and could only be noted if he was far north, goes the theory. His log also notes the beauty of the islands north of Siberia.

This supposedly occured during his two-decade service to the Mongol Empire.

[AFPhys]

Polo travelled extensively by ship. Made a well known map that shows the coast of Alaska and North Canada, though distorted and difficult to interpret if you don't take into account the difference between magnetic north and true north. Here's an excerpt that is very striking, that rephrases one passage from his works:

"In the Far North, Marco Polo sailed along a waterway that was later known as the Northwest Passage. He traveled as far as Baffin Island. It was in this region between the Magnetic Pole (red triangle) and the Geographic North Pole where he described a peculiar phenomenon called “Magnetic Compass Declination.” He observed that the Pole Star appeared to be situated south by compass bearing. " The only place that is true is near Hudson Bay. http://marcopolovoyages.com/LibCongressPapers/GunnarThompson2.html

[AFPhys]

I had the time to look this up for you ... in the following post, that map is linked:

http://www.freerepublic.com/focus/f-news/1878574/posts?page=22#22

[Puppage]

I don't recall anything about long sea voyages while he was working for Kublai.

Please, Sherm.....no facts. Can't you see we're dealing with feeeeeeeelings here?