We have some indication, we will soon see LNG being shipped in the Arctic. gCaptain reports an apparent intention of a Chinese/Greek consortium to build five ice capable LNG tankers for the transport of Russian LNG via the Arctic.
If these ships actually use an Arctic route to China, it will almost certainly be via the Northern Sea Route close to Russia rather than the North West Passage near Canada and the US, but both routes must exit very close to Alaska as the traffic moves through the 45 mile wide Bering Strait and past the Diomedes and St. Lawrence Island.
There is no indication of how large these proposed LNG tankers are, but take a look at the size of the tanks on this LNG tanker in this photo, one of several you can find at this gCaptain post.
Yes, those are people casting the shadows.