Sought by explorers for centuries as a possible trade route, it was first navigated by Roald Amundsen in 1903–1906. The Arctic pack ice prevents regular marine shipping throughout the year, but climate change is reducing the pack ice, and this Arctic shrinkage may eventually make the waterways more navigable. However, the contested sovereignty claims over the waters may complicate future shipping through the region: The Canadian government considers the Northwestern Passages part of Canadian Internal Waters,[4] but various countries maintain they are an international strait or transit passage, allowing free and unencumbered passage.
i think you'll find it is possible, but i'm not heading that far north.
i've managed to befriend the race leader of the last 3 legs, i'm following him