Basically the north shore is in the Arctic Circle. The vast majority of Alaska is in the Pacific. As is all 1200 km (27 000 km of coastline) of British Columbia.
It is a body boarding on two distinct zones and is therefore treated special in everything from Cartography to Geography and Meteorology. That’s just the way it is.
You are correct in many ways. The Nortwest Passages north of Hudson Bay is also technically the Northwest.
However, since parts of Alaska along with Canada are technically the Arctic Circle, they are excluded.
Basically the north shore is in the Arctic Circle. The vast majority of Alaska is in the Pacific. As is all 1200 km (27 000 km of coastline) of British Columbia.
Thus why I specifically cited ‘parts of’.
It is a body boarding on two distinct zones and is therefore treated special in everything from Cartography to Geography and Meteorology. That’s just the way it is.