will frozen seed potatoes sprout?

[svalli]

We are preparing moving over the Atlantic during the coldest season on Northern Hemisphere. I am not so concern about the true seeds (tomatoes, peppers, veggies, flowrers and TPS), but I was planning to pack some of the Peruvian Purple potatoes I dug up this fall and save them as seed potatoes.

Now I am worried that they will freeze while shipped in the ocean container with out earthly belongings. These potatoes had grown in the garden from potatoes, which stayed in the ground over the winter, so they must have been affected by freezing tmperatures during the Wisconsin winter. Would seed potatoes stay viable if they freeze? Is there anything I could do to protect them? I could pack them in sawdust in plastic container, so they would not dry, but they could still freeze.