With Canada still closed (and most likely will be the rest of the summer), those looking to cruise to Alaska have questions about transiting through Canada.  Though the rules that govern their Covid restrictions (stops/fuel, food/rest) are strict (and confusing), it can be done.  Just do your homework.  Here is a graphic that shows the procedures…

20210308-process-diagram-covid-and-canada-boating-borders

https://travel.gc.ca/travel-covid/travel-restrictions/border#waters