In 2022, due to Covid protocols, US boaters had to fill out and submit health information using the ArriveCan app. COVID-19 border measures have ended as of October 1, 2022 for all travellers entering or returning to Canada by air, land or sea.
After passing through customs you may want to request a Canada Customs Report, as proof that you arrived by road and not by water, in case you are approached by customs while in port. You will have to pull over and enter the building. You will need the boat registration and title for this. (We’ve gotten mixed stories about this the last couple of years. Folks at the border said we did not need it, staff on the dock in Gore Bay said we did.)