Coat of arms of Thunder Bay
The coat of arms of Thunder Bay, Ontario, Canada, is a combination of the coats of arms of the former cities of Port Arthur and Fort William, with a unifying symbol—the Sleeping Giant—at the base.
Retained from the coat of arms of Port Arthur is a moose with a silver collar, a sheaf of wheat and a salmon, and to signify the motto “The Gateway to the West”, “a sun splendor, the face charged with the castellated gateway, the portcullis raised”. The wavy blue and white bars below represent Lake Superior.
Fort William’s contribution is the beaver and North West Company slogan "Perseverance", inscribed on a scroll within the branches of a pine tree. Also from the Fort William arms as the shield in chief is a voyageur canoe, and on the dexter side of the shield stands the Voyageur as depicted on the original Fort William arms.